Skip to main content
Avora LearnCourses

Python for beginners

Python Comments for Beginners: Why and How

Comments are notes for humans. Python ignores them when running code, which makes them perfect for explaining why a line exists.

Pythonbeginner4 min readPython for beginners

Learning overview

Estimated time
4 minutes
Difficulty
Beginner
Prerequisites
No prior experience required
Learning outcome
Explain python using a clear mental model · Apply python in practical Python work
Last updated
July 20, 2026

What is a comment?

A comment is a note in your file that the computer skips. In Python, a full-line or end-of-line comment usually starts with #.

comments.py
# Greet the learner
print("Hello")  # short note beside code

Output

Hello

Why beginners should use comments

Comments help future you remember intent. They also make practice files easier to revise after a break. Write short why notes, not novels.

Helpful comments vs noisy comments

A helpful comment explains a non-obvious reason. A noisy comment only repeats what the code already says clearly.

  • Helpful: # Convert percent to a 0-1 value for the formula
  • Noisy: # print the score
  • Update comments when you change the code
  • Prefer clear variable names so fewer comments are needed

Practice pattern

For each mini program, add one comment describing the goal at the top. This trains documentation habits early without slowing you down.

goal-comment.py
# Goal: show average of three scores
total = 80 + 90 + 70
print(total / 3)

Output

80.0

Frequently asked questions

Do comments affect program output?

No. Python ignores comment text when running the program.

How do I write a comment in Python?

Start the note with #. Everything after # on that line is a comment.

Are multi-line comments required?

Beginners can stay with # lines. Triple quotes are often used as multi-line strings or docstrings; learn those as you grow.

Should I comment every line?

No. Comment intent and tricky spots. Clear code plus a few strong comments beats walls of notes.

#python#beginners#comments#readability

Topic graph

A taxonomy-generated path through this subject.

  1. Python
  2. Python for beginners
  3. python
  4. beginners
  5. comments
  6. readability
  7. What Is Python in Programming?
  8. Learn Python: From Fundamentals to Real Applications
  9. Python Tutorial: Build a Command-Line Expense Tracker

Related courses

Python ProgrammingStart interactive course →

Related learning

Recommended automatically from shared technologies, topics, intent, and difficulty.

Related Guides

Learn Python: From Fundamentals to Real ApplicationsLearn C: From First Program to Systems ThinkingLearn C++ (Cpp): From First Program to Object-Oriented Projects

Related Tutorials

Python Tutorial: Build a Command-Line Expense TrackerC Tutorial: Build a Student Grade CalculatorC++ (Cpp) Tutorial: Build a Student Grade Calculator

Related Glossary

What Is Python in Programming?What Is ACID in Programming?What Is Algorithm in Programming?

Related Cheatsheets

Python Cheatsheet: Syntax, Collections, Files, and OOPC++ (Cpp) Cheatsheet: Syntax Beginners Use DailyC Cheatsheet: Syntax Beginners Use Daily

Related Projects

Python Projects: 8 Builds from Automation to APIsCommand-Line Expense Tracker Project GuideC++ (Cpp) Projects for Beginners: 8 Builds That Teach Core Skills

Related Interview Questions

Python Interview Questions with Practical AnswersC Interview Questions for Beginners (With Clear Answers)C++ (Cpp) Interview Questions for Beginners (With Clear Answers)

Related reading

Hand-picked companion pages that deepen this topic.

blogWhat Is Python? A Complete Beginner Guide (2026)blogWhat Is Python Used For? Real Examples for Beginners (2026)blogIs Python Easy to Learn? Honest Beginner AnswerblogHow to Install Python: Beginner Setup GuideblogWrite Your First Python Program (Step by Step)blogPython print() Explained for Absolute BeginnersblogPython Syntax for Beginners: Rules That MatterblogPython Variables for Beginners: Store Values ClearlyblogPython Data Types for Beginners (With Examples)blogPython Strings for Beginners: Text in CodeblogPython Numbers and Math for BeginnersblogPython User Input for Beginners: input() GuideblogPython Operators for Beginners: Math and ComparisonblogPython if else for Beginners: Make DecisionsblogPython for Loops for Beginners (Clear Examples)blogPython while Loops for Beginners: Repeat Until DoneblogPython Lists for Beginners: Store Many ValuesblogPython Tuples for Beginners: Fixed SequencesblogPython Dictionaries for Beginners: Keys and ValuesblogPython Functions for Beginners: Reuse Your CodeblogPython import and Modules for BeginnersblogPython Errors and Debugging for BeginnersblogPython vs Java for Beginners: Which to Learn First?blogPython vs JavaScript for BeginnersblogWhy Learn Python in 2026? Beginner Reasons That MatterblogPython Project Ideas for Beginners (Start Tiny)blogPython Booleans for Beginners: True and FalseblogPython Type Conversion for BeginnersblogHow Does Python Work? Beginner Interpreter GuideblogBest Way to Learn Python for Beginners (2026)blogPython Indentation Explained for BeginnersblogPython f-Strings for Beginners: Cleaner TextblogPython range() for Beginners: Count with LoopsblogPython len() for Beginners: Count Items and Characters

Your next steps

Continue learning

  1. 1glossaryWhat Is Python in Programming?
  2. 2guidesLearn Python: From Fundamentals to Real Applications
  3. 3guidesPython Tutorial: Build a Command-Line Expense Tracker
  4. 4guidesLearn Java: From First Program to Real Applications