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Python Academy · Lesson

Nested Loops and Loop Patterns

Combine nested loops for grids, patterns, and accumulation.

Introduction

Combining loops unlocks patterns like matrix traversal, multi-level search, and generating combinations.

Basic Nested Loop

Two for loops: the outer runs N times, the inner runs M times per outer iteration — total N*M iterations.
for i in range(3):
    for j in range(3):
        print(i, j)

All lessons in this course

  1. if / elif / else Statements
  2. for Loops and range()
  3. while Loops and Loop Control
  4. Nested Loops and Loop Patterns
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