How to create Python comments

Comments can be used to explain Python code.
Comments can be used to improve the readability of code.
When testing code, you can use comments to prevent execution.

Create Comments

Comments starting with #, Python will ignore them:

Example

#This is a commentprint("Hello, World!")

Run Example

Comments can be placed at the end of a line and Python will ignore the rest of the line:

Example

print("Hello, World!") #This is a comment

Run Example

The comment does not have to be text explaining the code, it can also be used to prevent Python from executing the code:

Example

#print("Hello, World!")
print("Cheers, Mate!")

Running Example

#Multi-line comments

Python actually has no syntax for multi-line comments.

To add multiple lines of comments, insert a # for each line:

Example

#This is a comment
#written in
#more than just one line
print("Hello, World!")

Run Example

Alternatively, in a way that is not entirely expected, multiline strings can be used.

Since Python will ignore string literals that are not assigned to variables, you can add multi-line strings (triple quotes) to your code and add comments within them:

Example

"""
This is a comment
written in 
more than just one line
"""
print("Hello, World!")

Running Example

# As long as the string is not assigned to a variable, Python will read the code and then ignore it, and you're done Multiple lines of comments.

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