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Python: Infinite Iterators Made Easy

Process Unlimited Data Streams Without Crashing Your System

Pravash
4 min readMay 13, 2025

Imagine needing to generate an endless sequence of numbers, cycle through a list indefinitely, or repeat a value forever — without ever running out of memory. Sounds impossible? Not with Python.

Python’s itertools module is your secret weapon for creating efficient, memory-friendly iterators. These tools allow you to manage infinite data streams with ease, avoiding the pitfalls of memory overflow.

In this article, I will explore three powerful infinite iterator functions: count(), cycle(), and repeat(), each designed to solve different types of problems.

The Infinite Iterator Trio

Infinite iterators are specialized iterators from the itertools module that generate values endlessly, perfect for situations where you need an infinite sequence of values without ever storing them all in memory.

Let’s dive into each of these powerful tools.

1. count() — Your Personal Number Generator

The count(start=0, step=1) function creates a never-ending sequence of numbers, perfect for:

  • Creating unique IDs on the fly

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Pravash
Pravash

Written by Pravash

I am a passionate Data Engineer and Technology Enthusiast. Here I am using this platform to share my knowledge and experience on tech stacks.

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