| This directory contains a number of Python programs that are useful | 
 | while building or extending Python. | 
 |  | 
 | buildbot        Batchfiles for running on Windows buildbot workers. | 
 |  | 
 | ccbench         A Python threads-based concurrency benchmark. (*) | 
 |  | 
 | demo            Several Python programming demos. | 
 |  | 
 | freeze          Create a stand-alone executable from a Python program. | 
 |  | 
 | gdb             Python code to be run inside gdb, to make it easier to | 
 |                 debug Python itself (by David Malcolm). | 
 |  | 
 | i18n            Tools for internationalization. pygettext.py | 
 |                 parses Python source code and generates .pot files, | 
 |                 and msgfmt.py generates a binary message catalog | 
 |                 from a catalog in text format. | 
 |  | 
 | iobench         Benchmark for the new Python I/O system. (*) | 
 |  | 
 | msi             Support for packaging Python as an MSI package on Windows. | 
 |  | 
 | parser          Un-parsing tool to generate code from an AST. | 
 |  | 
 | peg_generator   PEG-based parser generator (pegen) used for new parser. | 
 |  | 
 | pynche          A Tkinter-based color editor. | 
 |  | 
 | scripts         A number of useful single-file programs, e.g. tabnanny.py | 
 |                 by Tim Peters, which checks for inconsistent mixing of | 
 |                 tabs and spaces, and 2to3, which converts Python 2 code | 
 |                 to Python 3 code. | 
 |  | 
 | stringbench     A suite of micro-benchmarks for various operations on | 
 |                 strings (both 8-bit and unicode). (*) | 
 |  | 
 | test2to3        A demonstration of how to use 2to3 transparently in setup.py. | 
 |  | 
 | unicode         Tools for generating unicodedata and codecs from unicode.org | 
 |                 and other mapping files (by Fredrik Lundh, Marc-Andre Lemburg | 
 |                 and Martin von Loewis). | 
 |  | 
 | unittestgui     A Tkinter based GUI test runner for unittest, with test | 
 |                 discovery. | 
 |  | 
 |  | 
 | (*) A generic benchmark suite is maintained separately at https://github.com/python/performance |