IDLE is Python's Tkinter-based Integrated DeveLopment Environment. IDLE emphasizes a lightweight, clean design with a simple user interface.Although it is suitable for beginners, even advanced users will find thatIDLE has everything they really need to develop pure Python code. IDLE features a multi-window text editor with multiple undo, Python colorizing,and many other capabilities, e.g. smart indent, call tips, and autocompletion. The editor has comprehensive search functions, including searching throughmultiple files.  Class browsers and path browsers provide fast access tocode objects from a top level viewpoint without dealing with code folding. There is a Python Shell window which features colorizing and command recall. IDLE executes Python code in a separate process, which is restarted for eachRun (F5) initiated from an editor window.  The environment can also be restarted from the Shell window without restarting IDLE. This enhancement has often been requested, and is now finally available.  Themagic "reload/import *" incantations are no longer required when editing andtesting a module two or three steps down the import chain. (Personal firewall software may warn about the connection IDLE makes to itssubprocess using this computer's internal loopback interface.  This connectionis not visible on any external interface and no data is sent to or receivedfrom the Internet.) It is possible to interrupt tightly looping user code, even on Windows. Applications which cannot support subprocesses and/or sockets can still runIDLE in a single process. IDLE has an integrated debugger with stepping, persistent breakpoints, and callstack visibility. There is a GUI configuration manager which makes it easy to select fonts,colors, keybindings, and startup options.  This facility includes a featurewhich allows the user to specify additional help sources, either locally or onthe web. IDLE is coded in 100% pure Python, using the Tkinter GUI toolkit (Tk/Tcl)and is cross-platform, working on Unix, Mac, and Windows. IDLE accepts command line arguments.  Try idle -h to see the options.  If you find bugs or have suggestions, let us know about them by using thePython Bug Tracker: http://sourceforge.net/projects/python Patches are always appreciated at the Python Patch Tracker, and changerequests should be posted to the RFE Tracker. For further details and links, read the Help files and check the IDLE homepage at http://www.python.org/idle/ There is a mail list for IDLE: idle-dev@python.org.  You can join at http://mail.python.org/mailman/listinfo/idle-dev