Answer:
In Python, modules of statements that perform a specific task are called functions. These functions can be defined within a program or separately in libraries and can be used by many programs. A function is a group of related statements that performs a particular task and runs only when it is called . Parameters can be passed into a function, and it can be designed to return a value to the calling program. Python comes with prewritten functions in libraries, and users can also define their own functions for reuse and sharing in other programs. The def keyword is used to define a function in Python, and a function can be called using the function name followed by opening and closing parentheses. Functions are a powerful programming tool and are an essential mechanism for sharing and trading software.
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