Bug 325090

Our support for the very basic built-in modules, like sys, os etc. is currently read from the files python uses too, i.e. /usr/lib/pythonx.y/os.py. That works to varying degrees -- for example, os.gecwd() is imported in a fancy way from the C POSIX builtins, and is thus not there.

A clever, but a bit complicated way to solve this would be:
 1) Add a file called os.py to documentation_files/. In there, do "from os import *", and then "def getcwd(): return str()" or something.
 2) Hack ContextBuilder::findModulePath (kdev-python/duchain/contextbuilder.cpp) to search in the system directories *before* those from Helper::getDataDirs() in case the currently parsed file is in those data dirs already. That'll ensure the "from os import *" will indeed pick up the system's os module.

A simpler solution, which might also be ok for different, smaller modules than os is just copying the system file to documentation_files and modifying it there, or just creating a new "pseudo" implementation of the module which just defines the functions and has docstrings, but doesn't actually implement anything.

Reproducible: Always