The Python Standard Library
The Valley of Code
Your Web Development Manual
Python exposes a lot of built-in functionality through its standard library.
The standard library is a huge collection of all sort of utilities, ranging from math utilities to debugging to creating graphical user interfaces.
You can find the full list of standard library modules here: https://docs.python.org/3/library/index.html
Some of the important modules are:
mathfor math utilities
refor regular expressions
jsonto work with JSON
datetimeto work with dates
sqlite3to use SQLite
osfor Operating System utilities
randomfor random number generation
statisticsfor statistics utilities
requeststo perform HTTP network requests
httpto create HTTP servers
urllibto manage URLs
Let’s introduce how to use a module of the standard library. You already know how to use modules you create, importing from other files in the program folder.
Well that’s the same with modules provided by the standard library:
math.sqrt(4) # 2.0
from math import sqrt
sqrt(4) # 2.0
We’ll soon explore the most important modules individually to understand what we can do with them.