What is the syntax for defining a function in Python?

In Python, the correct syntax for defining a function begins with the keyword "def," followed by the function name and parentheses that may include parameters. This structure allows Python to recognize that the subsequent block of code corresponds to a function definition.

The use of "def" clearly signals the start of a function declaration, and it is an essential part of the syntax. Following "def," the function name must adhere to the naming conventions (it should start with a letter or underscore and can include letters, numbers, and underscores), and the parameters are optional, placed within parentheses. The function body that follows must be indented to indicate that it belongs to the function defined above.

This clear and structured syntax for defining functions is fundamental to writing readable and organized Python code, allowing developers to create reusable blocks of code effectively.