wxPython/wx/py/PyShell.py

   1 """PyShell is a python shell application."""
   2
   3 # The next two lines, and the other code below that makes use of
   4 # ``__main__`` and ``original``, serve the purpose of cleaning up the
   5 # main namespace to look as much as possible like the regular Python
   6 # shell environment.
   7 import __main__
   8 original = __main__.__dict__.keys()
   9
  10 __author__ = "Patrick K. O'Brien <pobrien@orbtech.com>"
  11 __cvsid__ = "$Id$"
  12 __revision__ = "$Revision$"[11:-2]
  13
  14 import wx
  15
  16 class App(wx.App):
  17     """PyShell standalone application."""
  18
  19     def OnInit(self):
  20         import wx
  21         wx.InitAllImageHandlers()
  22         locals = __main__.__dict__
  23         from shell import ShellFrame
  24         self.frame = ShellFrame(locals=locals)
  25         self.frame.SetSize((750, 525))
  26         self.frame.Show()
  27         self.SetTopWindow(self.frame)
  28         self.frame.shell.SetFocus()
  29         return True
  30
  31 '''
  32 The main() function needs to handle being imported, such as with the
  33 pyshell script that wxPython installs:
  34
  35     #!/usr/bin/env python
  36
  37     from wx.py.PyShell import main
  38     main()
  39 '''
  40
  41 def main():
  42     """The main function for the PyShell program."""
  43     # Cleanup the main namespace, leaving the App class.
  44     import __main__
  45     md = __main__.__dict__
  46     keepers = original
  47     keepers.append('App')
  48     for key in md.keys():
  49         if key not in keepers:
  50             del md[key]
  51     # Create an application instance.
  52     app = App(0)
  53     # Cleanup the main namespace some more.
  54     if md.has_key('App') and md['App'] is App:
  55         del md['App']
  56     if md.has_key('__main__') and md['__main__'] is __main__:
  57         del md['__main__']
  58     # Mimic the contents of the standard Python shell's sys.path.
  59     import sys
  60     if sys.path[0]:
  61         sys.path[0] = ''
  62     # Add the application object to the sys module's namespace.
  63     # This allows a shell user to do:
  64     # >>> import sys
  65     # >>> sys.app.whatever
  66     sys.app = app
  67     del sys
  68     # Start the wxPython event loop.
  69     app.MainLoop()
  70
  71 if __name__ == '__main__':
  72     main()