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Create a TAGS file for Python programs, usable with GNU Emacs.

usage: eptags pyfiles...

The output TAGS file is usable with Emacs version 18, 19, 20.
Tagged are:
 - functions (even inside other defs or classes)
 - classes

eptags warns about files it cannot open.
eptags will not give warnings about duplicate tags.

BUGS:
   Because of tag duplication (methods with the same name in different
   classes), TAGS files are not very useful for most object-oriented
   python projects.
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