Why Does My Python Function Return \'None\' Even Though It Prints Output?

Why Does My Python Function Return "None" at the End?

When encountering unexpected behavior in a Python function, it's important to understand how function return values work.

The Return Value Issue

Your confusion stems from the fact that although Python functions always return a value, they don't explicitly do so if a return statement is not written. When this occurs, the function returns the special value "None."

Code Analysis

Your code defines a function 'printmult' that takes an argument 'n' and prints multiples of 'n' from 1 to 10. However, you do not include a return statement, leading to the 'None' return.

Expected Behavior

Unless otherwise specified, 'printmult' will return 'None' because it doesn't explicitly return any value. If you call the function as 'print(printmult(30))', it will print the results of the function call (the printed multiples of 30) and then 'None.'

Understanding Function Return

Remember that printing and returning are distinct actions. Printing displays output to the console, while returning provides a value back to the caller of the function. In your case, 'printmult' only prints the multiples, and doesn't provide a meaningful return value for 'printmult(30)'.

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