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