Comments

What You’ll Learn

You’ll learn how to write comments in Python to explain your code and temporarily disable parts of it during testing.

Single-Line Comments

Comments start with a #, and Python will ignore the rest of the line.

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

print("BrowserCode") # This is a comment at the end of a line

Multi-Line Comments

Python does not really have a syntax for multi-line comments. Instead, you can just insert a # for each line:

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

Alternatively, you can use a multiline string (triple quotes). Since Python ignores string literals that are not assigned to a variable, this acts as a comment:

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

Why Use Comments?

1. Explain code: Help others (and your future self) understand complex logic.
2. Prevent execution: Quickly disable code when trying to find bugs.