import

Learn to load modules with import.

Load a module with import

The import keyword loads a module and makes its name available. Items inside the module are accessed with a dot:

import math
print(math.pi)        # 3.14159...
print(math.sqrt(16))  # 4.0

Here the math module is loaded; math.pi and math.sqrt are called with a dot. The module name acts like a namespace.

This is the fundamental way to organise reusable code.

A module is a Python file (.py) containing functions and variables. When you import it, all items in that file become available:

# tools.py file
def merhaba():
    print("selam")

# another file
import tools
tools.merhaba()  # selam

Modules that Python itself provides (math, random, os) are called the standard library and require no installation.

Modules are the way to break large programs into parts.

Write import math. Then write print(math.sqrt(16)).

Show example solution

import math
print(math.sqrt(16))

Complete the import keyword

____ math
print(math.pi)

Show answer

import math
print(math.pi)

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