How do you define a function in Python?

• A. Using the define keyword followed by the function name
• B. Using the def keyword followed by the function name and parentheses
• C. Using the function keyword followed by the function name
• D. Using the init keyword followed by the function name

Answer: (B)

In Python, defining a function is accomplished using the keyword "def," followed by the function name and parentheses, which may include parameters. This structure is fundamental to building functions in Python and clearly distinguishes function definitions from other types of statements.

When you use the "def" keyword, you are signaling to the Python interpreter that what follows is a function definition. After specifying the function's name, parentheses can contain any parameters the function needs to operate, allowing it to accept inputs. For example:

def my_function(parameter1, parameter2):

return parameter1 + parameter2

In this example, "my_function" is defined with two parameters. The use of "def" makes it clear that a function is being created, and proper indentation following the definition signifies the block of code that constitutes the function's body.

The correct approach to defining a function in Python encapsulates the required syntax that allows the interpreter to properly recognize and manage function behavior during execution. This structure is crucial since other keywords referenced in the other options, such as "define," "function," or "init," do not exist in Python for defining functions. Only "def" correctly initiates a function definition.