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