Lib/idlelib/idle.py

   1 try:
   2     import idlelib.PyShell
   3 except ImportError:
   4     # IDLE is not installed, but maybe PyShell is on sys.path:
   5     try:
   6         import PyShell
   7     except ImportError:
   8         raise
   9     else:
  10         import os
  11         idledir = os.path.dirname(os.path.abspath(PyShell.__file__))
  12         if idledir != os.getcwd():
  13             # We're not in the IDLE directory, help the subprocess find run.py
  14             pypath = os.environ.get('PYTHONPATH', '')
  15             if pypath:
  16                 os.environ['PYTHONPATH'] = pypath + ':' + idledir
  17             else:
  18                 os.environ['PYTHONPATH'] = idledir
  19         PyShell.main()
  20 else:
  21     idlelib.PyShell.main()