compare

gistfile1.py

import os
from distutils.sysconfig import get_python_lib
from pip import get_installed_distributions

def get_locally_installed_packages():
    path = get_python_lib()
    packages = {}
    for root, dirs, files in os.walk(path):
        for item in files:
            if "top_level" in item:
                with open(os.path.join(root, item), "r") as f:
                    package = root.split("/")[-1].split("-")
                    package_import = f.read().strip().split("\n")
                    package_import_name = ""
                    for item in package_import:
                        if item not in ["tests", "_tests"]:
                            package_import_name = item
                            break
                    if package_import_name == "":
                        logging.debug(
                            'Could not determine import name for package ' + package_import)
                    else:
                        packages[package_import_name] = {
                            'version': package[1].replace(".dist", ""),
                            'name': package[0]
                        }
    return packages

a=get_locally_installed_packages()
b=get_installed_distributions()

print len(a), sorted(a.keys())
print len(b), sorted([p.project_name for p in b])
print os.popen('pip list').read()