Import Other Python Files Examples

Say you have created a Python file calculator.py and you want to access this file from another Python file then follow the below steps.

Step 1: Put the file inside a folder

Create a folder say calculator and add the calculator.py file in it.

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

def subtract(a, b):
    return a - b

Step 2: Create __init__.py

Next, create an empty __init__.py file within the same folder.

Step 3: Create another py file.

Now let's see various ways to access the calculator.py file from main.py

Example 1: Import the entire module

import calculator.calculator

result = calculator.calculator.add(5, 3)
print(result)

result = calculator.calculator.subtract(8, 4)
print(result)

Example 2: Import the entire module as alias

import calculator.calculator as calc

result = calc.add(5, 3)
print(result)

result = calc.subtract(8, 4)
print(result)

Example 3: Import specific functions from the module

from calculator.calculator import add, subtract

result = add(5, 3)
print(result)

result = subtract(8, 4)
print(result)

Example 4: Import all functions from the module

from calculator.calculator import *

result = add(5, 3)
print(result)

result = subtract(8, 4)
print(result)

Files Structure

calculator/
  __init__.py
  calculator.py
main.py