Gavin Panella has proposed merging lp:~allenap/maas/find-modules into lp:maas.
Commit message: New script, utilities/find-imported-module-files, that finds the files of imported modules for a range of input files. This is intended to help get correct dependency lists for use with packaging. Requested reviews: Launchpad code reviewers (launchpad-reviewers) For more details, see: https://code.launchpad.net/~allenap/maas/find-modules/+merge/129946 New script, utilities/find-imported-module-files, that finds the files of imported modules for a range of input files. This is intended to help get correct dependency lists for use with packaging. -- https://code.launchpad.net/~allenap/maas/find-modules/+merge/129946 Your team Launchpad code reviewers is requested to review the proposed merge of lp:~allenap/maas/find-modules into lp:maas.
=== added file 'utilities/find-imported-module-files' --- utilities/find-imported-module-files 1970-01-01 00:00:00 +0000 +++ utilities/find-imported-module-files 2012-10-16 17:03:21 +0000 @@ -0,0 +1,83 @@ +#!/usr/bin/env python2.7 +# -*- mode: python -*- +# Copyright 2012 Canonical Ltd. This software is licensed under the +# GNU Affero General Public License version 3 (see the file LICENSE). + +"""Find imported modules. + +For example, to find dependency packages for the provisioning +server, try the following: + + $ find src/provisioningserver \\ + > -name '*.py' ! -path '*/test*' -print0 | \\ + > xargs -r0 utilities/finder.py --null | \\ + > xargs -r0 dpkg -S | cut -d: -f1 | sort -u + +""" + +from __future__ import ( + absolute_import, + print_function, + unicode_literals, + ) + +__metaclass__ = type + +import argparse +from modulefinder import ModuleFinder +from os import ( + getcwd, + path, + ) +import sys + +sys.path.insert(0, path.dirname(__file__)) +from python_standard_libs import python_standard_libs + + +def find_standard_library_modules(seed=python_standard_libs): + """Find all standard-library modules.""" + finder = ModuleFinder() + for name in seed: + finder.import_module(name, name, None) + return set(finder.modules) + + +argument_parser = argparse.ArgumentParser( + formatter_class=argparse.RawDescriptionHelpFormatter, + description=__doc__) +argument_parser.add_argument( + "-0", "--null", help="delimit output with null bytes", + action="store_true", default=False) +argument_parser.add_argument( + "filenames", nargs="+", metavar="FILENAME") + + +if __name__ == '__main__': + options = argument_parser.parse_args() + standard_libs = find_standard_library_modules() + finder = ModuleFinder() + for filename in options.filenames: + finder.load_file(filename) + # Collect modules from the finder, eliminating those from the standard + # library. + modules = ( + module for name, module in finder.modules.items() + if name not in standard_libs + ) + # Collect the absolute paths for each module, eliminating those modules + # with no filename. + filenames = ( + path.abspath(module.__file__) for module in modules + if module.__file__ is not None + ) + # Narrow down to those modules not in the nearby source tree. + here = getcwd() + filenames = ( + filename for filename in filenames + if not filename.startswith(here) + ) + # Write it all out. + end = b"\0" if options.null else None + for filename in sorted(filenames): + print(filename, end=end)
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