Merge pull request #62 from sjuvekar/master

A special case for 'Permission denied' error msg when trying to execute ...

tests/rules/test_python_command.py

@@ -0,0 +1,9 @@
+from thefuck.main import Command
+from thefuck.rules.python_command import match, get_new_command
+
+def test_match():
+    assert match(Command('temp.py', '', 'Permission denied'), None)
+    assert not match(Command('', '', ''), None)
+
+def test_get_new_command():
+    assert get_new_command(Command('./test_sudo.py', '', ''), None) == 'python ./test_sudo.py'