Developer(s)Robin Dunn
Harri Pasanen
Initial release1998; 26 years ago (1998)
Stable release
4.2.1[1] / June 7, 2023; 6 months ago (2023-06-07)
Written inC++ / Python
Operating systemCross-platform
LicensewxWindows License

wxPython is a wrapper for the cross-platform GUI API (often referred to as a "toolkit") wxWidgets (which is written in C++) for the Python programming language. It is one of the alternatives to Tkinter. It is implemented as a Python extension module (native code).


In 1995, Robin Dunn needed a GUI application to be deployed on HP-UX systems but also run Windows 3.1 within short time frame. He needed a cross-platform solution. While evaluating free and commercial solutions, he ran across Python bindings on the wxWidgets toolkit webpage (known as wxWindows at the time). This was Dunn's introduction to Python. Together with Harri Pasanen and Edward Zimmerman he developed those initial bindings into wxPython 0.2.[2]

In August 1998, version 0.3 of wxPython was released. It was built for wxWidgets 2.0 and ran on Win32, with a wxGTK version in the works.[3]

The first versions of the wrapper were created by hand. However, the code became difficult to maintain and keep synchronized with wxWidgets releases. By 1997, versions were created with SWIG, greatly decreasing the amount of work to update the wrapper.[2]

Project Phoenix

In 2010, the Project Phoenix began; an effort to clean up the wxPython implementation and in the process make it compatible with Python 3.[4] The project is a new implementation of wxPython, focused on improving speed, maintainability and extensibility. Like the previous version of wxPython, it wraps the wxWidgets C++ toolkit and provides access to the user interface portions of the wxWidgets API.[5]

With the release of 4.0.0a1 wxPython in 2017, the Project Phoenix version became the official version.[6] wxPython 4.x is the current version being developed as of June 2022.[7]


wxPython enables Python to be used for cross-platform GUI applications requiring very little, if any, platform-specific code.


This is a simple "Hello world" module, depicting the creation of the two main objects in wxPython (the main window object and the application object), followed by passing the control to the event-driven system (by calling MainLoop()) which manages the user-interactive part of the program.

#!/usr/bin/env python3

import wx

app = wx.App(False)  # Create a new app, don't redirect stdout/stderr to a window.
frame = wx.Frame(None, title="Hello World") # A Frame is a top-level window.
frame.Show(True)     # Show the frame.

This is another example of the wxPython Close Button with wxPython GUI display show in Windows 10 operating system.

Close button with wxPython shown on Windows 10
import wx

class WxButton(wx.Frame):

    def __init__(self, *args, **kw):
        super(WxButton, self).__init__(*args, **kw)

    def InitUI(self):
        pnl = wx.Panel(self)
        closeButton = wx.Button(pnl, label='Close Me', pos=(20, 20))

        closeButton.Bind(wx.EVT_BUTTON, self.OnClose)

        self.SetSize((350, 250))
        self.SetTitle('Close Button')

    def OnClose(self, e):

def main():
    app = wx.App()
    ex = WxButton(None)

if __name__ == "__main__":


Being a wrapper, wxPython uses the same free software license used by wxWidgets (wxWindows License)[8]—which is approved by Free Software Foundation and Open Source Initiative.

Applications developed with wxPython



  1. ^ "wxPython Changelog". wxPython. 2023-06-07. Retrieved 2023-06-30.
  2. ^ a b Team, The wxPython (2017-07-14). "wxPython History". wxPython. Retrieved 2022-06-25.
  3. ^ "Yahoo! Groups : python-announce-list Messages :Message 95 of 1083". 2001-03-12. Archived from the original on 12 March 2001. Retrieved 2022-06-25.
  4. ^ "Goals of Project Phoenix". Retrieved 2016-03-17.
  5. ^ "Project Phoenix readme file on GitHub". Retrieved 2014-01-01.
  6. ^ Robin (2017-04-16). "wxPython 4.0.0a1 Release". wxPython. Retrieved 2022-06-25.
  7. ^ Team, The wxPython (2020-11-21). "wxPython 4.1.1 Released". wxPython. Retrieved 2022-06-25.
  8. ^ "Copyright notice". Retrieved 2009-02-27.
  9. ^ "6 lessons from Dropbox one million files saved every 15 minutes".
  10. ^ "Open source components and licenses". Google. Retrieved 28 January 2013.


Further reading