# 19.2 Miscellaneous useful utilities

Some of these are very old and/or not very robust; marked with ``hmm.''

`dircmp`
  -- class to build directory diff tools on (may become a demo or tool)

`bdb`
  -- A generic Python debugger base class (used by pdb)

`ihooks`
  -- Import hook support (for `rexec`; may become obsolete)

`tzparse`
  -- Parse a timezone specification (unfinished; may disappear in the future)