python comments

Comments can be used to explain Python code.

Comments can be used to make the code more readable.

Comments can be used to prevent execution when testing code.

Creating a Comment

Comments starts with a #, and Python will

ignore them:

Example



#This is a comment

print("Hello, World!")



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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



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Example

A comment does not have to be text that explains the code, it can also be used to

prevent Python from executing code:

Example



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

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Example

Multi Line Comments

Python does not really have a syntax for multi line comments.

To add a multiline comment you could insert a # for each line:

Example



#This is a comment#written in#more than just one lineprint("Hello,

World!")



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Example

Or, not quite as intended, you can use a multiline string.

Since Python will ignore string literals that are not assigned to a variable, you can add a multiline string (triple quotes) in your code, and place your comment inside it:

Example



"""This is a commentwritten in more than just

one line"""print("Hello, World!")

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Example

As long as the string is not assigned to a variable, Python will read the code, but then ignore it, and you have made a multiline comment.

Test Yourself With Exercises

Exercise:

Comments in Python are written with a special character, which one?

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