首先會從github，看看README了解requests想解決的問題和範圍。

再來觀察requests的程式碼與目錄結構，針對想理解的程式碼看內部的實現
除了學習模組化寫法和架構之外，還可以了解python或HTTP的工作原理。

解決的問題與範圍

Requests is an elegant and simple HTTP library for Python, built for human beings.
Requests allows you to send organic, grass-fed HTTP/1.1 requests, without the need for manual labor.

Feature Support

• International Domains and URLs
• Keep-Alive & Connection Pooling
• Sessions with Cookie Persistence
• Browser-style SSL Verification
• Basic/Digest Authentication
• Elegant Key/Value Cookies
• Automatic Decompression
• Automatic Content Decoding
• Unicode Response Bodies
• Multipart File Uploads
• HTTP(S) Proxy Support
• Connection Timeouts
• Streaming Downloads
• .netrc Support
• Chunked Requests

想關注的檔案與目錄

• setup.py
• Makefile
• docs
• requests
• tests