Output of Python Program | Set 4 (Modules)

Output of Python Program | Set 4 (Modules)

Modules in Python help organize code into reusable components, making development more efficient and manageable. In this blog, we'll explore how importing and using modules affects the output of Python programs. Understanding this will help you write modular and clean code.

Basic Module Import Example

Consider a simple program that imports the built-in math module and uses it to calculate the square root of a number:

import math

print(math.sqrt(16))

Output:

4.0

Here, the sqrt() function from the math module returns the square root of 16.

Using Aliases with Modules

Modules can be imported with an alias to simplify their usage. For example:

import math as m

print(m.factorial(5))

Output:

120

The factorial() function computes 5! = 120.

Importing Specific Functions

Instead of importing the whole module, you can import specific functions:

from math import pow

print(pow(2, 3))

Output:

8.0

This computes 2 raised to the power 3.

Practice Problem

Predict the output of the following Python program:

import random

numbers = [1, 2, 3, 4, 5]
random.shuffle(numbers)
print(numbers)

Explanation: The program imports the random module and uses its shuffle() method to reorder the list numbers randomly, then prints the new order.

Solution to Practice Problem

The output will be the numbers list with its elements in random order, for example:

[3, 1, 5, 2, 4]

Note: The exact output may differ each time you run the code because the shuffle operation is random.

Conclusion

Modules are an integral part of Python that enable code reuse and organization. Knowing how to import and utilize modules effectively can greatly enhance your programming skills. Practice importing different modules and exploring their functions to see how they affect program output.