20.5 Idle

Idle is the Python IDE built with the Tkinter GUI toolkit.

IDLE has the following features:

coded in 100% pure Python, using the Tkinter GUI toolkit
cross-platform: works on Windows and Unix (on Mac OS, there are currently problems with Tcl/Tk)
multi-window text editor with multiple undo, Python colorizing and many other features, e.g. smart indent and call tips
Python shell window (a.k.a. interactive interpreter)
debugger (not complete, but you can set breakpoints, view and step)

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