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			759 lines
		
	
	
		
			27 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			759 lines
		
	
	
		
			27 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
| """Append module search paths for third-party packages to sys.path.
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| 
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| ****************************************************************
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| * This module is automatically imported during initialization. *
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| ****************************************************************
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| 
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| In earlier versions of Python (up to 1.5a3), scripts or modules that
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| needed to use site-specific modules would place ``import site''
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| somewhere near the top of their code.  Because of the automatic
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| import, this is no longer necessary (but code that does it still
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| works).
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| 
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| This will append site-specific paths to the module search path.  On
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| Unix, it starts with sys.prefix and sys.exec_prefix (if different) and
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| appends lib/python<version>/site-packages as well as lib/site-python.
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| It also supports the Debian convention of
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| lib/python<version>/dist-packages.  On other platforms (mainly Mac and
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| Windows), it uses just sys.prefix (and sys.exec_prefix, if different,
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| but this is unlikely).  The resulting directories, if they exist, are
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| appended to sys.path, and also inspected for path configuration files.
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| 
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| FOR DEBIAN, this sys.path is augmented with directories in /usr/local.
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| Local addons go into /usr/local/lib/python<version>/site-packages
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| (resp. /usr/local/lib/site-python), Debian addons install into
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| /usr/{lib,share}/python<version>/dist-packages.
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| 
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| A path configuration file is a file whose name has the form
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| <package>.pth; its contents are additional directories (one per line)
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| to be added to sys.path.  Non-existing directories (or
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| non-directories) are never added to sys.path; no directory is added to
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| sys.path more than once.  Blank lines and lines beginning with
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| '#' are skipped. Lines starting with 'import' are executed.
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| 
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| For example, suppose sys.prefix and sys.exec_prefix are set to
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| /usr/local and there is a directory /usr/local/lib/python2.X/site-packages
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| with three subdirectories, foo, bar and spam, and two path
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| configuration files, foo.pth and bar.pth.  Assume foo.pth contains the
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| following:
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| 
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|   # foo package configuration
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|   foo
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|   bar
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|   bletch
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| 
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| and bar.pth contains:
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| 
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|   # bar package configuration
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|   bar
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| 
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| Then the following directories are added to sys.path, in this order:
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| 
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|   /usr/local/lib/python2.X/site-packages/bar
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|   /usr/local/lib/python2.X/site-packages/foo
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| 
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| Note that bletch is omitted because it doesn't exist; bar precedes foo
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| because bar.pth comes alphabetically before foo.pth; and spam is
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| omitted because it is not mentioned in either path configuration file.
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| 
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| After these path manipulations, an attempt is made to import a module
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| named sitecustomize, which can perform arbitrary additional
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| site-specific customizations.  If this import fails with an
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| ImportError exception, it is silently ignored.
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| 
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| """
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| 
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| import sys
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| import os
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| try:
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|     import __builtin__ as builtins
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| except ImportError:
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|     import builtins
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| try:
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|     set
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| except NameError:
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|     from sets import Set as set
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| 
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| # Prefixes for site-packages; add additional prefixes like /usr/local here
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| PREFIXES = [sys.prefix, sys.exec_prefix]
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| # Enable per user site-packages directory
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| # set it to False to disable the feature or True to force the feature
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| ENABLE_USER_SITE = None
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| # for distutils.commands.install
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| USER_SITE = None
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| USER_BASE = None
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| 
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| _is_64bit = (getattr(sys, 'maxsize', None) or getattr(sys, 'maxint')) > 2**32
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| _is_pypy = hasattr(sys, 'pypy_version_info')
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| _is_jython = sys.platform[:4] == 'java'
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| if _is_jython:
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|     ModuleType = type(os)
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| 
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| def makepath(*paths):
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|     dir = os.path.join(*paths)
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|     if _is_jython and (dir == '__classpath__' or
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|                        dir.startswith('__pyclasspath__')):
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|         return dir, dir
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|     dir = os.path.abspath(dir)
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|     return dir, os.path.normcase(dir)
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| 
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| def abs__file__():
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|     """Set all module' __file__ attribute to an absolute path"""
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|     for m in sys.modules.values():
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|         if ((_is_jython and not isinstance(m, ModuleType)) or
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|             hasattr(m, '__loader__')):
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|             # only modules need the abspath in Jython. and don't mess
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|             # with a PEP 302-supplied __file__
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|             continue
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|         f = getattr(m, '__file__', None)
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|         if f is None:
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|             continue
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|         m.__file__ = os.path.abspath(f)
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| 
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| def removeduppaths():
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|     """ Remove duplicate entries from sys.path along with making them
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|     absolute"""
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|     # This ensures that the initial path provided by the interpreter contains
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|     # only absolute pathnames, even if we're running from the build directory.
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|     L = []
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|     known_paths = set()
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|     for dir in sys.path:
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|         # Filter out duplicate paths (on case-insensitive file systems also
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|         # if they only differ in case); turn relative paths into absolute
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|         # paths.
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|         dir, dircase = makepath(dir)
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|         if not dircase in known_paths:
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|             L.append(dir)
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|             known_paths.add(dircase)
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|     sys.path[:] = L
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|     return known_paths
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| 
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| # XXX This should not be part of site.py, since it is needed even when
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| # using the -S option for Python.  See http://www.python.org/sf/586680
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| def addbuilddir():
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|     """Append ./build/lib.<platform> in case we're running in the build dir
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|     (especially for Guido :-)"""
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|     from distutils.util import get_platform
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|     s = "build/lib.%s-%.3s" % (get_platform(), sys.version)
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|     if hasattr(sys, 'gettotalrefcount'):
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|         s += '-pydebug'
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|     s = os.path.join(os.path.dirname(sys.path[-1]), s)
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|     sys.path.append(s)
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| 
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| def _init_pathinfo():
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|     """Return a set containing all existing directory entries from sys.path"""
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|     d = set()
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|     for dir in sys.path:
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|         try:
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|             if os.path.isdir(dir):
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|                 dir, dircase = makepath(dir)
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|                 d.add(dircase)
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|         except TypeError:
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|             continue
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|     return d
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| 
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| def addpackage(sitedir, name, known_paths):
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|     """Add a new path to known_paths by combining sitedir and 'name' or execute
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|     sitedir if it starts with 'import'"""
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|     if known_paths is None:
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|         _init_pathinfo()
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|         reset = 1
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|     else:
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|         reset = 0
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|     fullname = os.path.join(sitedir, name)
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|     try:
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|         f = open(fullname, "rU")
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|     except IOError:
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|         return
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|     try:
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|         for line in f:
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|             if line.startswith("#"):
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|                 continue
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|             if line.startswith("import"):
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|                 exec(line)
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|                 continue
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|             line = line.rstrip()
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|             dir, dircase = makepath(sitedir, line)
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|             if not dircase in known_paths and os.path.exists(dir):
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|                 sys.path.append(dir)
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|                 known_paths.add(dircase)
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|     finally:
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|         f.close()
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|     if reset:
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|         known_paths = None
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|     return known_paths
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| 
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| def addsitedir(sitedir, known_paths=None):
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|     """Add 'sitedir' argument to sys.path if missing and handle .pth files in
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|     'sitedir'"""
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|     if known_paths is None:
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|         known_paths = _init_pathinfo()
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|         reset = 1
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|     else:
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|         reset = 0
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|     sitedir, sitedircase = makepath(sitedir)
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|     if not sitedircase in known_paths:
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|         sys.path.append(sitedir)        # Add path component
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|     try:
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|         names = os.listdir(sitedir)
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|     except os.error:
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|         return
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|     names.sort()
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|     for name in names:
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|         if name.endswith(os.extsep + "pth"):
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|             addpackage(sitedir, name, known_paths)
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|     if reset:
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|         known_paths = None
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|     return known_paths
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| 
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| def addsitepackages(known_paths, sys_prefix=sys.prefix, exec_prefix=sys.exec_prefix):
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|     """Add site-packages (and possibly site-python) to sys.path"""
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|     prefixes = [os.path.join(sys_prefix, "local"), sys_prefix]
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|     if exec_prefix != sys_prefix:
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|         prefixes.append(os.path.join(exec_prefix, "local"))
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| 
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|     for prefix in prefixes:
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|         if prefix:
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|             if sys.platform in ('os2emx', 'riscos') or _is_jython:
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|                 sitedirs = [os.path.join(prefix, "Lib", "site-packages")]
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|             elif _is_pypy:
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|                 sitedirs = [os.path.join(prefix, 'site-packages')]
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|             elif sys.platform == 'darwin' and prefix == sys_prefix:
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| 
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|                 if prefix.startswith("/System/Library/Frameworks/"): # Apple's Python
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| 
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|                     sitedirs = [os.path.join("/Library/Python", sys.version[:3], "site-packages"),
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|                                 os.path.join(prefix, "Extras", "lib", "python")]
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| 
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|                 else: # any other Python distros on OSX work this way
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|                     sitedirs = [os.path.join(prefix, "lib",
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|                                              "python" + sys.version[:3], "site-packages")]
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| 
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|             elif os.sep == '/':
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|                 sitedirs = [os.path.join(prefix,
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|                                          "lib",
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|                                          "python" + sys.version[:3],
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|                                          "site-packages"),
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|                             os.path.join(prefix, "lib", "site-python"),
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|                             os.path.join(prefix, "python" + sys.version[:3], "lib-dynload")]
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|                 lib64_dir = os.path.join(prefix, "lib64", "python" + sys.version[:3], "site-packages")
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|                 if (os.path.exists(lib64_dir) and
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|                     os.path.realpath(lib64_dir) not in [os.path.realpath(p) for p in sitedirs]):
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|                     if _is_64bit:
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|                         sitedirs.insert(0, lib64_dir)
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|                     else:
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|                         sitedirs.append(lib64_dir)
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|                 try:
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|                     # sys.getobjects only available in --with-pydebug build
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|                     sys.getobjects
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|                     sitedirs.insert(0, os.path.join(sitedirs[0], 'debug'))
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|                 except AttributeError:
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|                     pass
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|                 # Debian-specific dist-packages directories:
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|                 sitedirs.append(os.path.join(prefix, "local/lib",
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|                                              "python" + sys.version[:3],
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|                                              "dist-packages"))
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|                 if sys.version[0] == '2':
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|                     sitedirs.append(os.path.join(prefix, "lib",
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|                                                  "python" + sys.version[:3],
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|                                                  "dist-packages"))
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|                 else:
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|                     sitedirs.append(os.path.join(prefix, "lib",
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|                                                  "python" + sys.version[0],
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|                                                  "dist-packages"))
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|                 sitedirs.append(os.path.join(prefix, "lib", "dist-python"))
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|             else:
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|                 sitedirs = [prefix, os.path.join(prefix, "lib", "site-packages")]
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|             if sys.platform == 'darwin':
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|                 # for framework builds *only* we add the standard Apple
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|                 # locations. Currently only per-user, but /Library and
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|                 # /Network/Library could be added too
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|                 if 'Python.framework' in prefix:
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|                     home = os.environ.get('HOME')
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|                     if home:
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|                         sitedirs.append(
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|                             os.path.join(home,
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|                                          'Library',
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|                                          'Python',
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|                                          sys.version[:3],
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|                                          'site-packages'))
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|             for sitedir in sitedirs:
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|                 if os.path.isdir(sitedir):
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|                     addsitedir(sitedir, known_paths)
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|     return None
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| 
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| def check_enableusersite():
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|     """Check if user site directory is safe for inclusion
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| 
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|     The function tests for the command line flag (including environment var),
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|     process uid/gid equal to effective uid/gid.
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| 
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|     None: Disabled for security reasons
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|     False: Disabled by user (command line option)
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|     True: Safe and enabled
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|     """
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|     if hasattr(sys, 'flags') and getattr(sys.flags, 'no_user_site', False):
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|         return False
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| 
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|     if hasattr(os, "getuid") and hasattr(os, "geteuid"):
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|         # check process uid == effective uid
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|         if os.geteuid() != os.getuid():
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|             return None
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|     if hasattr(os, "getgid") and hasattr(os, "getegid"):
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|         # check process gid == effective gid
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|         if os.getegid() != os.getgid():
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|             return None
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| 
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|     return True
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| 
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| def addusersitepackages(known_paths):
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|     """Add a per user site-package to sys.path
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| 
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|     Each user has its own python directory with site-packages in the
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|     home directory.
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| 
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|     USER_BASE is the root directory for all Python versions
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| 
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|     USER_SITE is the user specific site-packages directory
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| 
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|     USER_SITE/.. can be used for data.
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|     """
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|     global USER_BASE, USER_SITE, ENABLE_USER_SITE
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|     env_base = os.environ.get("PYTHONUSERBASE", None)
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| 
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|     def joinuser(*args):
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|         return os.path.expanduser(os.path.join(*args))
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| 
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|     #if sys.platform in ('os2emx', 'riscos'):
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|     #    # Don't know what to put here
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|     #    USER_BASE = ''
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|     #    USER_SITE = ''
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|     if os.name == "nt":
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|         base = os.environ.get("APPDATA") or "~"
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|         if env_base:
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|             USER_BASE = env_base
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|         else:
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|             USER_BASE = joinuser(base, "Python")
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|         USER_SITE = os.path.join(USER_BASE,
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|                                  "Python" + sys.version[0] + sys.version[2],
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|                                  "site-packages")
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|     else:
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|         if env_base:
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|             USER_BASE = env_base
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|         else:
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|             USER_BASE = joinuser("~", ".local")
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|         USER_SITE = os.path.join(USER_BASE, "lib",
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|                                  "python" + sys.version[:3],
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|                                  "site-packages")
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| 
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|     if ENABLE_USER_SITE and os.path.isdir(USER_SITE):
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|         addsitedir(USER_SITE, known_paths)
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|     if ENABLE_USER_SITE:
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|         for dist_libdir in ("lib", "local/lib"):
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|             user_site = os.path.join(USER_BASE, dist_libdir,
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|                                      "python" + sys.version[:3],
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|                                      "dist-packages")
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|             if os.path.isdir(user_site):
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|                 addsitedir(user_site, known_paths)
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|     return known_paths
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| 
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| 
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| 
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| def setBEGINLIBPATH():
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|     """The OS/2 EMX port has optional extension modules that do double duty
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|     as DLLs (and must use the .DLL file extension) for other extensions.
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|     The library search path needs to be amended so these will be found
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|     during module import.  Use BEGINLIBPATH so that these are at the start
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|     of the library search path.
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| 
 | |
|     """
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|     dllpath = os.path.join(sys.prefix, "Lib", "lib-dynload")
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|     libpath = os.environ['BEGINLIBPATH'].split(';')
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|     if libpath[-1]:
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|         libpath.append(dllpath)
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|     else:
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|         libpath[-1] = dllpath
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|     os.environ['BEGINLIBPATH'] = ';'.join(libpath)
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| 
 | |
| 
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| def setquit():
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|     """Define new built-ins 'quit' and 'exit'.
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|     These are simply strings that display a hint on how to exit.
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| 
 | |
|     """
 | |
|     if os.sep == ':':
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|         eof = 'Cmd-Q'
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|     elif os.sep == '\\':
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|         eof = 'Ctrl-Z plus Return'
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|     else:
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|         eof = 'Ctrl-D (i.e. EOF)'
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| 
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|     class Quitter(object):
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|         def __init__(self, name):
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|             self.name = name
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|         def __repr__(self):
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|             return 'Use %s() or %s to exit' % (self.name, eof)
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|         def __call__(self, code=None):
 | |
|             # Shells like IDLE catch the SystemExit, but listen when their
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|             # stdin wrapper is closed.
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|             try:
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|                 sys.stdin.close()
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|             except:
 | |
|                 pass
 | |
|             raise SystemExit(code)
 | |
|     builtins.quit = Quitter('quit')
 | |
|     builtins.exit = Quitter('exit')
 | |
| 
 | |
| 
 | |
| class _Printer(object):
 | |
|     """interactive prompt objects for printing the license text, a list of
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|     contributors and the copyright notice."""
 | |
| 
 | |
|     MAXLINES = 23
 | |
| 
 | |
|     def __init__(self, name, data, files=(), dirs=()):
 | |
|         self.__name = name
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|         self.__data = data
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|         self.__files = files
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|         self.__dirs = dirs
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|         self.__lines = None
 | |
| 
 | |
|     def __setup(self):
 | |
|         if self.__lines:
 | |
|             return
 | |
|         data = None
 | |
|         for dir in self.__dirs:
 | |
|             for filename in self.__files:
 | |
|                 filename = os.path.join(dir, filename)
 | |
|                 try:
 | |
|                     fp = open(filename, "rU")
 | |
|                     data = fp.read()
 | |
|                     fp.close()
 | |
|                     break
 | |
|                 except IOError:
 | |
|                     pass
 | |
|             if data:
 | |
|                 break
 | |
|         if not data:
 | |
|             data = self.__data
 | |
|         self.__lines = data.split('\n')
 | |
|         self.__linecnt = len(self.__lines)
 | |
| 
 | |
|     def __repr__(self):
 | |
|         self.__setup()
 | |
|         if len(self.__lines) <= self.MAXLINES:
 | |
|             return "\n".join(self.__lines)
 | |
|         else:
 | |
|             return "Type %s() to see the full %s text" % ((self.__name,)*2)
 | |
| 
 | |
|     def __call__(self):
 | |
|         self.__setup()
 | |
|         prompt = 'Hit Return for more, or q (and Return) to quit: '
 | |
|         lineno = 0
 | |
|         while 1:
 | |
|             try:
 | |
|                 for i in range(lineno, lineno + self.MAXLINES):
 | |
|                     print(self.__lines[i])
 | |
|             except IndexError:
 | |
|                 break
 | |
|             else:
 | |
|                 lineno += self.MAXLINES
 | |
|                 key = None
 | |
|                 while key is None:
 | |
|                     try:
 | |
|                         key = raw_input(prompt)
 | |
|                     except NameError:
 | |
|                         key = input(prompt)
 | |
|                     if key not in ('', 'q'):
 | |
|                         key = None
 | |
|                 if key == 'q':
 | |
|                     break
 | |
| 
 | |
| def setcopyright():
 | |
|     """Set 'copyright' and 'credits' in __builtin__"""
 | |
|     builtins.copyright = _Printer("copyright", sys.copyright)
 | |
|     if _is_jython:
 | |
|         builtins.credits = _Printer(
 | |
|             "credits",
 | |
|             "Jython is maintained by the Jython developers (www.jython.org).")
 | |
|     elif _is_pypy:
 | |
|         builtins.credits = _Printer(
 | |
|             "credits",
 | |
|             "PyPy is maintained by the PyPy developers: http://pypy.org/")
 | |
|     else:
 | |
|         builtins.credits = _Printer("credits", """\
 | |
|     Thanks to CWI, CNRI, BeOpen.com, Zope Corporation and a cast of thousands
 | |
|     for supporting Python development.  See www.python.org for more information.""")
 | |
|     here = os.path.dirname(os.__file__)
 | |
|     builtins.license = _Printer(
 | |
|         "license", "See http://www.python.org/%.3s/license.html" % sys.version,
 | |
|         ["LICENSE.txt", "LICENSE"],
 | |
|         [os.path.join(here, os.pardir), here, os.curdir])
 | |
| 
 | |
| 
 | |
| class _Helper(object):
 | |
|     """Define the built-in 'help'.
 | |
|     This is a wrapper around pydoc.help (with a twist).
 | |
| 
 | |
|     """
 | |
| 
 | |
|     def __repr__(self):
 | |
|         return "Type help() for interactive help, " \
 | |
|                "or help(object) for help about object."
 | |
|     def __call__(self, *args, **kwds):
 | |
|         import pydoc
 | |
|         return pydoc.help(*args, **kwds)
 | |
| 
 | |
| def sethelper():
 | |
|     builtins.help = _Helper()
 | |
| 
 | |
| def aliasmbcs():
 | |
|     """On Windows, some default encodings are not provided by Python,
 | |
|     while they are always available as "mbcs" in each locale. Make
 | |
|     them usable by aliasing to "mbcs" in such a case."""
 | |
|     if sys.platform == 'win32':
 | |
|         import locale, codecs
 | |
|         enc = locale.getdefaultlocale()[1]
 | |
|         if enc.startswith('cp'):            # "cp***" ?
 | |
|             try:
 | |
|                 codecs.lookup(enc)
 | |
|             except LookupError:
 | |
|                 import encodings
 | |
|                 encodings._cache[enc] = encodings._unknown
 | |
|                 encodings.aliases.aliases[enc] = 'mbcs'
 | |
| 
 | |
| def setencoding():
 | |
|     """Set the string encoding used by the Unicode implementation.  The
 | |
|     default is 'ascii', but if you're willing to experiment, you can
 | |
|     change this."""
 | |
|     encoding = "ascii" # Default value set by _PyUnicode_Init()
 | |
|     if 0:
 | |
|         # Enable to support locale aware default string encodings.
 | |
|         import locale
 | |
|         loc = locale.getdefaultlocale()
 | |
|         if loc[1]:
 | |
|             encoding = loc[1]
 | |
|     if 0:
 | |
|         # Enable to switch off string to Unicode coercion and implicit
 | |
|         # Unicode to string conversion.
 | |
|         encoding = "undefined"
 | |
|     if encoding != "ascii":
 | |
|         # On Non-Unicode builds this will raise an AttributeError...
 | |
|         sys.setdefaultencoding(encoding) # Needs Python Unicode build !
 | |
| 
 | |
| 
 | |
| def execsitecustomize():
 | |
|     """Run custom site specific code, if available."""
 | |
|     try:
 | |
|         import sitecustomize
 | |
|     except ImportError:
 | |
|         pass
 | |
| 
 | |
| def virtual_install_main_packages():
 | |
|     f = open(os.path.join(os.path.dirname(__file__), 'orig-prefix.txt'))
 | |
|     sys.real_prefix = f.read().strip()
 | |
|     f.close()
 | |
|     pos = 2
 | |
|     hardcoded_relative_dirs = []
 | |
|     if sys.path[0] == '':
 | |
|         pos += 1
 | |
|     if _is_jython:
 | |
|         paths = [os.path.join(sys.real_prefix, 'Lib')]
 | |
|     elif _is_pypy:
 | |
|         if sys.version_info > (3, 2):
 | |
|             cpyver = '%d' % sys.version_info[0]
 | |
|         elif sys.pypy_version_info >= (1, 5):
 | |
|             cpyver = '%d.%d' % sys.version_info[:2]
 | |
|         else:
 | |
|             cpyver = '%d.%d.%d' % sys.version_info[:3]
 | |
|         paths = [os.path.join(sys.real_prefix, 'lib_pypy'),
 | |
|                  os.path.join(sys.real_prefix, 'lib-python', cpyver)]
 | |
|         if sys.pypy_version_info < (1, 9):
 | |
|             paths.insert(1, os.path.join(sys.real_prefix,
 | |
|                                          'lib-python', 'modified-%s' % cpyver))
 | |
|         hardcoded_relative_dirs = paths[:] # for the special 'darwin' case below
 | |
|         #
 | |
|         # This is hardcoded in the Python executable, but relative to sys.prefix:
 | |
|         for path in paths[:]:
 | |
|             plat_path = os.path.join(path, 'plat-%s' % sys.platform)
 | |
|             if os.path.exists(plat_path):
 | |
|                 paths.append(plat_path)
 | |
|     elif sys.platform == 'win32':
 | |
|         paths = [os.path.join(sys.real_prefix, 'Lib'), os.path.join(sys.real_prefix, 'DLLs')]
 | |
|     else:
 | |
|         paths = [os.path.join(sys.real_prefix, 'lib', 'python'+sys.version[:3])]
 | |
|         hardcoded_relative_dirs = paths[:] # for the special 'darwin' case below
 | |
|         lib64_path = os.path.join(sys.real_prefix, 'lib64', 'python'+sys.version[:3])
 | |
|         if os.path.exists(lib64_path):
 | |
|             if _is_64bit:
 | |
|                 paths.insert(0, lib64_path)
 | |
|             else:
 | |
|                 paths.append(lib64_path)
 | |
|         # This is hardcoded in the Python executable, but relative to
 | |
|         # sys.prefix.  Debian change: we need to add the multiarch triplet
 | |
|         # here, which is where the real stuff lives.  As per PEP 421, in
 | |
|         # Python 3.3+, this lives in sys.implementation, while in Python 2.7
 | |
|         # it lives in sys.
 | |
|         try:
 | |
|             arch = getattr(sys, 'implementation', sys)._multiarch
 | |
|         except AttributeError:
 | |
|             # This is a non-multiarch aware Python.  Fallback to the old way.
 | |
|             arch = sys.platform
 | |
|         plat_path = os.path.join(sys.real_prefix, 'lib',
 | |
|                                  'python'+sys.version[:3],
 | |
|                                  'plat-%s' % arch)
 | |
|         if os.path.exists(plat_path):
 | |
|             paths.append(plat_path)
 | |
|     # This is hardcoded in the Python executable, but
 | |
|     # relative to sys.prefix, so we have to fix up:
 | |
|     for path in list(paths):
 | |
|         tk_dir = os.path.join(path, 'lib-tk')
 | |
|         if os.path.exists(tk_dir):
 | |
|             paths.append(tk_dir)
 | |
| 
 | |
|     # These are hardcoded in the Apple's Python executable,
 | |
|     # but relative to sys.prefix, so we have to fix them up:
 | |
|     if sys.platform == 'darwin':
 | |
|         hardcoded_paths = [os.path.join(relative_dir, module)
 | |
|                            for relative_dir in hardcoded_relative_dirs
 | |
|                            for module in ('plat-darwin', 'plat-mac', 'plat-mac/lib-scriptpackages')]
 | |
| 
 | |
|         for path in hardcoded_paths:
 | |
|             if os.path.exists(path):
 | |
|                 paths.append(path)
 | |
| 
 | |
|     sys.path.extend(paths)
 | |
| 
 | |
| def force_global_eggs_after_local_site_packages():
 | |
|     """
 | |
|     Force easy_installed eggs in the global environment to get placed
 | |
|     in sys.path after all packages inside the virtualenv.  This
 | |
|     maintains the "least surprise" result that packages in the
 | |
|     virtualenv always mask global packages, never the other way
 | |
|     around.
 | |
| 
 | |
|     """
 | |
|     egginsert = getattr(sys, '__egginsert', 0)
 | |
|     for i, path in enumerate(sys.path):
 | |
|         if i > egginsert and path.startswith(sys.prefix):
 | |
|             egginsert = i
 | |
|     sys.__egginsert = egginsert + 1
 | |
| 
 | |
| def virtual_addsitepackages(known_paths):
 | |
|     force_global_eggs_after_local_site_packages()
 | |
|     return addsitepackages(known_paths, sys_prefix=sys.real_prefix)
 | |
| 
 | |
| def fixclasspath():
 | |
|     """Adjust the special classpath sys.path entries for Jython. These
 | |
|     entries should follow the base virtualenv lib directories.
 | |
|     """
 | |
|     paths = []
 | |
|     classpaths = []
 | |
|     for path in sys.path:
 | |
|         if path == '__classpath__' or path.startswith('__pyclasspath__'):
 | |
|             classpaths.append(path)
 | |
|         else:
 | |
|             paths.append(path)
 | |
|     sys.path = paths
 | |
|     sys.path.extend(classpaths)
 | |
| 
 | |
| def execusercustomize():
 | |
|     """Run custom user specific code, if available."""
 | |
|     try:
 | |
|         import usercustomize
 | |
|     except ImportError:
 | |
|         pass
 | |
| 
 | |
| 
 | |
| def main():
 | |
|     global ENABLE_USER_SITE
 | |
|     virtual_install_main_packages()
 | |
|     abs__file__()
 | |
|     paths_in_sys = removeduppaths()
 | |
|     if (os.name == "posix" and sys.path and
 | |
|         os.path.basename(sys.path[-1]) == "Modules"):
 | |
|         addbuilddir()
 | |
|     if _is_jython:
 | |
|         fixclasspath()
 | |
|     GLOBAL_SITE_PACKAGES = not os.path.exists(os.path.join(os.path.dirname(__file__), 'no-global-site-packages.txt'))
 | |
|     if not GLOBAL_SITE_PACKAGES:
 | |
|         ENABLE_USER_SITE = False
 | |
|     if ENABLE_USER_SITE is None:
 | |
|         ENABLE_USER_SITE = check_enableusersite()
 | |
|     paths_in_sys = addsitepackages(paths_in_sys)
 | |
|     paths_in_sys = addusersitepackages(paths_in_sys)
 | |
|     if GLOBAL_SITE_PACKAGES:
 | |
|         paths_in_sys = virtual_addsitepackages(paths_in_sys)
 | |
|     if sys.platform == 'os2emx':
 | |
|         setBEGINLIBPATH()
 | |
|     setquit()
 | |
|     setcopyright()
 | |
|     sethelper()
 | |
|     aliasmbcs()
 | |
|     setencoding()
 | |
|     execsitecustomize()
 | |
|     if ENABLE_USER_SITE:
 | |
|         execusercustomize()
 | |
|     # Remove sys.setdefaultencoding() so that users cannot change the
 | |
|     # encoding after initialization.  The test for presence is needed when
 | |
|     # this module is run as a script, because this code is executed twice.
 | |
|     if hasattr(sys, "setdefaultencoding"):
 | |
|         del sys.setdefaultencoding
 | |
| 
 | |
| main()
 | |
| 
 | |
| def _script():
 | |
|     help = """\
 | |
|     %s [--user-base] [--user-site]
 | |
| 
 | |
|     Without arguments print some useful information
 | |
|     With arguments print the value of USER_BASE and/or USER_SITE separated
 | |
|     by '%s'.
 | |
| 
 | |
|     Exit codes with --user-base or --user-site:
 | |
|       0 - user site directory is enabled
 | |
|       1 - user site directory is disabled by user
 | |
|       2 - uses site directory is disabled by super user
 | |
|           or for security reasons
 | |
|      >2 - unknown error
 | |
|     """
 | |
|     args = sys.argv[1:]
 | |
|     if not args:
 | |
|         print("sys.path = [")
 | |
|         for dir in sys.path:
 | |
|             print("    %r," % (dir,))
 | |
|         print("]")
 | |
|         def exists(path):
 | |
|             if os.path.isdir(path):
 | |
|                 return "exists"
 | |
|             else:
 | |
|                 return "doesn't exist"
 | |
|         print("USER_BASE: %r (%s)" % (USER_BASE, exists(USER_BASE)))
 | |
|         print("USER_SITE: %r (%s)" % (USER_SITE, exists(USER_BASE)))
 | |
|         print("ENABLE_USER_SITE: %r" %  ENABLE_USER_SITE)
 | |
|         sys.exit(0)
 | |
| 
 | |
|     buffer = []
 | |
|     if '--user-base' in args:
 | |
|         buffer.append(USER_BASE)
 | |
|     if '--user-site' in args:
 | |
|         buffer.append(USER_SITE)
 | |
| 
 | |
|     if buffer:
 | |
|         print(os.pathsep.join(buffer))
 | |
|         if ENABLE_USER_SITE:
 | |
|             sys.exit(0)
 | |
|         elif ENABLE_USER_SITE is False:
 | |
|             sys.exit(1)
 | |
|         elif ENABLE_USER_SITE is None:
 | |
|             sys.exit(2)
 | |
|         else:
 | |
|             sys.exit(3)
 | |
|     else:
 | |
|         import textwrap
 | |
|         print(textwrap.dedent(help % (sys.argv[0], os.pathsep)))
 | |
|         sys.exit(10)
 | |
| 
 | |
| if __name__ == '__main__':
 | |
|     _script()
 |