In Python, comments are used to document and explain your code. They are ignored by the Python interpreter and have no effect on the program's execution. Comments are useful for providing explanations, making notes, or temporarily disabling code.
There are two types of comments in Python:
Single-line comments : Single-line comments start with a hash character (`#`). Everything after the `#` on the same line is considered a comment.
# This is a single-line comment
x = 5 # This is another comment
Multi-line comments : Multi-line comments, also known as block comments, are enclosed in triple quotes (`"""` or `'''`). They can span multiple lines.
"""
This is a multi-line comment.
It can span multiple lines.
"""
Although multi-line comments are not specifically intended for this purpose, they can also be used to temporarily disable blocks of code:
"""
print("This won't be executed.")
print("This won't be executed either.")
"""
# The above code is disabled, so only this line will be executed.
print("This will be executed.")
Comments are essential for code readability and maintainability. They help you and others understand the purpose and functionality of the code. It's good practice to include comments that explain complex logic, provide context, or document any assumptions or limitations of the code.
Remember that code comments should be clear, concise, and kept up to date with any code changes to ensure their accuracy.