Python import module

import module name
When import is used, it first looks for a module in the local scope by calling the __import __ () function. The return value of the function is then reflected in the source code output.

import math

print (math.pi)



import module name
In the above code, the math module is imported and its variables can be accessed as a class, and pi — its object. 
The value pi is returned by __import __ (). 
Pi as a whole can be imported into our start code rather than importing the entire module.

from math import pi

# Note that in the above example,
# we used math.pi. Here we used
# pi directly.

print (pi)



from module import_name *
In the above code, the math module is not imported, but simply pi was imported as a variable. 
All functions and constants can be imported using *.

from math import *

print (pi)

print (factorial ( 6 ))


 3.141592653589793 720 

As said above, the import uses __import __ () to find the module, and if it is not found, it will raise ImportError

import mathematics

print (mathematics.pi)


 Traceback (most recent call last): File "C: /Users/GFG/Tuples/", line 1, in import mathematics ImportError: No module named `mathematics` 

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