Course Eight - Loops in Python

Loops in Python

By ienex

In programming, instructions are generally executed sequentially, one after the other. However, there are situations where we need to repeat a block of instructions multiple times. This is where loops come into play in Python.

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What is a Loop?

A loop is a control structure that allows a set of instructions to be executed repeatedly, based on a condition or over a sequence of items. Python provides several types of loops to handle different scenarios.

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Types of Loops in Python

Loop Type	Description
while loop	Repeats a block of instructions as long as a specific condition is true. The condition is checked before each iteration.
for loop	Iterates over a sequence or collection of items (like a list, string, or range) for a specific number of times.
Nested loops	Loops can be placed inside other loops to handle more complex repetitive tasks.

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Control Instructions for Loops

Python provides special statements to control the flow of loops:

• break: Exits the loop immediately, skipping the remaining iterations.

• continue: Skips the current iteration and moves to the next iteration of the loop.

• else: Can be used with loops to execute a block of code after the loop finishes normally (without a break).

These instructions allow you to modify the normal sequence of execution and make loops more flexible and powerful.