Adding error tracebacks to CONSOLE_LOG files

src/errors.py

@@ -1,3 +1,36 @@
+import sys
+
+class FauxTb(object):
+    def __init__(self, tb_frame, tb_lineno, tb_next):
+        self.tb_frame = tb_frame
+        self.tb_lineno = tb_lineno
+        self.tb_next = tb_next
+
+def current_stack(skip=0):
+    try: 1/0
+    except ZeroDivisionError:
+        f = sys.exc_info()[2].tb_frame
+    for i in range(skip + 2):
+        f = f.f_back
+    lst = []
+    while f is not None:
+        lst.append((f, f.f_lineno))
+        f = f.f_back
+    return lst
+
+def extend_traceback(tb, stack):
+    """Extend traceback with stack info."""
+    head = tb
+    for tb_frame, tb_lineno in stack:
+        head = FauxTb(tb_frame, tb_lineno, head)
+    return head
+
+def full_exc_info(exc_info):
+    """Like sys.exc_info, but includes the full traceback."""
+    t, v, tb = exc_info
+    full_tb = extend_traceback(tb, current_stack(1))
+    return t, v, full_tb
+
 class RedditLoginFailed(Exception):
     pass