Python Common standard library/extension library __python

Common Standard Library

Standard library Description
Builtins built-in function default load
OS Operating System interface
SYS Python's own operating environment
Common Tools for Functools
JSON encodes and decodes JSON objects
Logging Logging, debugging
Multiprocessing Multi-process
Threading Multithreading
Copy copy
Time
DateTime Date and Time
Calendar calendars
Hashlib Encryption algorithm
Random generating random numbers
Re string regular match
Socket Standard BSD Sockets API
Shutil File and directory management
Glob search based on file wildcard characters

Common extension Libraries

Requests uses URLLIB3 to inherit all the features of URLLIB2.
Urllib High-level library based on HTTP
Scrapy Reptile
Parser for BEAUTIFULSOUP4 Html/xml
Celery Distributed Task Scheduling module
Redis Cache
Pillow (PIL) image processing
Xlsxwriter only write excle function, support xlsx
XLWT only write Excle feature, support XLS, 2013 or earlier office
XLRD Read Only excle function
Elasticsearch Full-text Search Engine
Pymysql Database Connection Library
Mongoengine/pymongo Mongodbpython Interface
Matplotlib Drawing
NUMPY/SCIPY Scientific calculation
Django/tornado/flask Web Framework
xmltodict XML Turn Dict
Simplehttpserver Simple HTTP Server, not using web framework
Gevent Python network library based on the co-process
Fabric System Management
Pandas Data Processing Library
Scikit-learn Machine Learning Library