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#!/usr/bin/env python
from __future__ import print_function
import json
import pkgutil
import sys
from pprint import pprint
class VersionScanner(object):
def __init__(self, package, exclusions=[]):
self.package = package
self.prefix = self.package.__name__ + '.'
self.exclusions = exclusions
self.versions = dict()
self.scan()
def __iter__(self):
for k, v in self.versions.items():
yield k, v
def scan(self):
try:
module = self.package
try:
self.versions[module.__name__] = module.__version__
except AttributeError:
self.versions[module.__name__] = 'unknown'
except ImportError as e:
print('ImportError({0}): {1}'.format(module.__name__, e), file=sys.stderr)
for importer, modname, ispkg in pkgutil.iter_modules(self.package.__path__, self.prefix):
excluded = False
for ex in self.exclusions:
ex = self.prefix + ex
if modname == ex:
excluded = True
break
if excluded:
continue
try:
module = importer.find_module(modname).load_module(modname)
try:
self.versions[modname] = module.__version__
except AttributeError:
self.versions[modname] = 'unknown'
except ImportError as e:
print('ImportError({0}): {1}'.format(modname, e), file=sys.stderr)
def as_json(self):
return json.dumps(self.versions, sort_keys=True)
def as_zip(self):
return zip(self.versions.keys(), self.versions.values())
if __name__ == '__main__':
import argparse
import importlib
parser = argparse.ArgumentParser()
parser.add_argument('parent_package')
parser.add_argument('-e', '--exclude', action='append', default=[])
parser.add_argument('-j', '--json', action='store_true')
args = parser.parse_args()
parent_package = importlib.import_module(args.parent_package)
scanner = VersionScanner(parent_package, args.exclude)
if args.json:
print(scanner.as_json())
else:
for pkg, version in sorted(scanner):
print('{0}={1}'.format(pkg, version))
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