pymsn 是一个用来开发 MSN 客户端开发的 Python 开发包。
特性：
- + MSNP15
- + Best MSNP2P implementation : avatars and custom emoticons
- + Yahoo messenger contacts support : chat and presence
- + Live Address Book support : full contact and group management
- + Server side contacts aliasing
- + Offline messages support
- + MSN Spaces
- + Content Roaming support : avatar, display name and personal message storage
- + Full support for HTTP and HTTPS proxies
- + Support HTTP Polling transport
- + No threads, fully asynchronous
- + Caching system (only used for storing the SSO tickets for now, but will be used to support deltas in the AddressBook later)
- + Very solid and extensible architecture
- + Solid networking through a new sublibrary : gnet
