Python: import module in other module

Modules can import other modules using import statement.

arithmetic.py

def sum(a, b):
  return a+b

def subtract(a, b):
  return a-b
  
def mul(a,b):
  return a*b
  
def div(a, b):
  return a/b

main.py

import arithmetic

print(arithmetic.sum(10, 20))
print(arithmetic.subtract(10, 20))
print(arithmetic.mul(10, 20))
print(arithmetic.div(10, 20))

$ python3 main.py

30

-10

200

0.5

Note

It is not necessary to put all import statements in the beginning of module. You can import whenever required.

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