The built-in module
Python has a very useful standard library. The standard library will be installed on your computer along with the Python interpreter. It is
an integral part of Python . These standard libraries are tools that Python prepares for you, which can make programming more effective.
Commonly used standard library
| Standard library | Description |
|---|---|
| builtins | Built-in functions are loaded by default |
| YOU | Operating system interface |
| sys | Python's own operating environment |
| functools | Commonly used tools |
| json | Encode and decode JSON objects |
| logging | Logging, debugging |
| multiprocessing | multi-Progress |
| threading | Multithreading |
| copy | copy |
| time | time |
| datetime | Date and time |
| calendar | calendar |
| hashlib | Encryption Algorithm |
| random | Generate random numbers |
| re | Regular string matching |
| socket | Standard BSD Sockets API |
| globe | File wildcard search |
Commonly used extension libraries
| Extension library | Description |
|---|---|
| requests | Urllib3 is used, which inherits all the features of urllib2 |
| urllib | Http-based high-level library |
| scrapy | reptile |
| beautifulsoup4 | HTML/XML parser |
| celery | Distributed task scheduling module |
| repeat | Cache |
| Pillow(PIL) | Image Processing |
| matplotlib | Drawing |
| numpy/scipy | Scientific Computing |
| django/tornado/flask | web framework |
| vented | Python network library based on coroutine |