Python Comments

To explain the functionality of Python code, comments must be used. It can be used to make the code more readable. It can be used to prevent execution when testing code.

A hash sign (#) that is not inside a string literal begins a comment. All characters after the # and up to the physical line end are part of the comment, and the Python interpreter ignores them.

# First comment
print("Hello, World!")  # second comment

This will produce following result:

Hello, World!

Single Line Comment

Comments usually starts with a # (hash symbol) then Python interpreter ignores them.

# Single Line Comment
print("Hello, World!")

You can place comments at the end of a line, and Python will ignore the rest of the line.

print("Hello, World!!") #Single Line Comment

Both above will produce following result:

Hello, World!!

Multi Line Comment

Python does not really have a syntax for multi line comments. Python does not really have a syntax for multi line comments. To add a multiline comment there are two approaches.

To add a multiline comment you can insert a # for each line.

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

As you know Python ignores 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.

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

As you haven’t assigned string to a variable, Python will read the code, but then ignore it. Finally, you have made a multiline comment.

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