diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 6e6346a3..968b152c 100755
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -3377,6 +3377,7 @@ Python:
   - ".fcgi"
   - ".gyp"
   - ".lmi"
+  - ".py3"
   - ".pyde"
   - ".pyp"
   - ".pyt"
diff --git a/samples/Python/py3.py3 b/samples/Python/py3.py3
new file mode 100644
index 00000000..6e521931
--- /dev/null
+++ b/samples/Python/py3.py3
@@ -0,0 +1,20 @@
+import random
+
+guesses = 0
+
+number = random.randint(1, 20)
+
+print("Guess the number between 1 and 20! You have 6 tries.")
+while guesses < 6:
+    guess = int(input("Is it... "))
+
+    if guess == number:
+        print("Hooray! You guessed it right!")
+        break
+    elif guess < number:
+        print("It's bigger...")
+    elif guess > number:
+        print("It's not so big.")
+    guesses += 1
+if guesses == 6:
+    print("You've ran out of tries.")