FindImports
FindImports extracts Python module dependencies by parsing source files. It can report names that are imported but not used, and it can generate module import graphs in ASCII or graphviz formats.
A distinguishing feature of findimports is that it can parse doctest code inside docstrings.
Note that not all cases are handled correctly, especially if you use 'import foo.bar.baz'.
Misc
Home page: https://github.com/mgedmin/findimports
Old project page: https://launchpad.net/findimports
Licence: GPL v2 or later (http://www.gnu.org/copyleft/gpl.html)