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 try:
  17     True
  18 except NameError:
  19     True = 1==1
  20     False = 1==0
  21
  22
  23 class App(wx.App):
  24     """PyShell standalone application."""
  25
  26     def OnInit(self):
  27         import wx
  28         wx.InitAllImageHandlers()
  29         locals = __main__.__dict__
  30         from shell import ShellFrame
  31         self.frame = ShellFrame(locals=locals)
  32         self.frame.SetSize((750, 525))
  33         self.frame.Show()
  34         self.SetTopWindow(self.frame)
  35         self.frame.shell.SetFocus()
  36         return True
  37
  38 '''
  39 The main() function needs to handle being imported, such as with the
  40 pyshell script that wxPython installs:
  41
  42     #!/usr/bin/env python
  43
  44     from wx.py.PyShell import main
  45     main()
  46 '''
  47
  48 def main():
  49     """The main function for the PyShell program."""
  50     # Cleanup the main namespace, leaving the App class.
  51     import __main__
  52     md = __main__.__dict__
  53     keepers = original
  54     keepers.append('App')
  55     for key in md.keys():
  56         if key not in keepers:
  57             del md[key]
  58     # Create an application instance.
  59     app = App(0)
  60     # Cleanup the main namespace some more.
  61     if md.has_key('App') and md['App'] is App:
  62         del md['App']
  63     if md.has_key('__main__') and md['__main__'] is __main__:
  64         del md['__main__']
  65     # Mimic the contents of the standard Python shell's sys.path.
  66     import sys
  67     if sys.path[0]:
  68         sys.path[0] = ''
  69     # Add the application object to the sys module's namespace.
  70     # This allows a shell user to do:
  71     # >>> import sys
  72     # >>> sys.app.whatever
  73     sys.app = app
  74     del sys
  75     # Start the wxPython event loop.
  76     app.MainLoop()
  77
  78 if __name__ == '__main__':
  79     main()