Zipimport

pytz has a severe performance problem that impedes its usage in App Engine. This is caused because pytz.__init__ builds a list of available zoneinfos checking the entire zoneinfo database (which means: it tries to open hundreds of files). In this alternative version, pytz is highly optimized... Platforms: *nix

This package aims to speed up imports from zipfiles for frozen python apps (and other scenarios where the zipfile is assumed not to change) by taking several shortcuts that aren't available to the standard zipimport module. It exports a single useful name, "zipimporter", which is a drop-in... Platforms: *nix

This module implements an import hook for verifying Python modules before they are loaded, by means of cryptographically-signed hashes. It is compatible with PEP 302 and designed to complement the code-signing functionality of your host OS (e.g. Microsoft Authenticode, Apple OSX Code Signing)... Platforms: *nix