How to Use Comments in Python - Python Full Course - CodingAyush

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How to Use Comments in Python

Comments are used to explain Python code. They can be used to make the code more readable, to prevent execution when testing code, and to provide documentation for other developers.

Single-Line Comments

Single-line comments begin with the '#' character. Anything that is written in a single line after '#' is considered as a comment.

For example:

# This is a single-line comment.

Multi-Line Comments

Multi-line comments can be used to explain a block of code. They are enclosed in triple quotes (''' or """).

For example:

'''This is a multi-line comment.
  It can be used to explain a block of code.'''

When to Use Comments

Comments should be used to explain Python code when:

  • The code is not self-explanatory.
  • You want to prevent execution of code when testing.
  • You want to provide documentation for other developers.

How to Write Effective Comments

Effective comments are:

  • Concise.
  • Precise.
  • Up-to-date.

Here are some tips for writing effective comments:

  • Use complete sentences.
  • Avoid jargon.
  • Use descriptive names for variables and functions.
  • Update your comments when you make changes to your code.


Comments are a valuable tool for making Python code more readable, maintainable, and understandable. By using comments effectively, you can improve the quality of your code and make it easier for others to work with.

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