The Python Standard Library
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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:
math
for math utilitiesre
for regular expressionsjson
to work with JSONdatetime
to work with datessqlite3
to use SQLiteos
for Operating System utilitiesrandom
for random number generationstatistics
for statistics utilitiesrequests
to perform HTTP network requestshttp
to create HTTP serversurllib
to 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:
import math
math.sqrt(4) # 2.0
or
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.
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