What are Comments?

Comments in Python are used to explain code, make it more readable, or prevent execution of code while testing. Python ignores comments during execution.

1. Single-line Comments

Start with a # symbol. Everything after # on that line is ignored.

python
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# This is a comment
print("Hello")   # This prints Hello

2. Multi-line Comments

Python doesn't have official multi-line comment syntax. You can use multiple single-line comments or a multiline string (triple quotes) not assigned to a variable.

python
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"""This is a multi-line comment. It's often used to describe modules or functions."""
print("Multiline comment above.")

3. Docstrings (Documentation Strings)

Docstrings are special multi-line comments used to document modules, functions, classes, or methods. They use triple quotes and are accessible via .__doc__.

python
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 def greet():"""This function prints a greeting message."""
print("Hello from function!")  print(greet.__doc__)