How does the return function work in Python?

How does the return function work in Python?

The return keyword in Python exits a function and tells Python to run the rest of the main program. A return keyword can send a value back to the main program. While values may have been defined in a function, you can send them back to your main program and read them throughout your code.

How do I return to the main function in Python?

You can use sys. exit() to exit from the middle of the main function. However, I would recommend not doing any logic there. Instead, put everything in a function, and call that from __main__ – then you can use return as normal.

What is a main function in Python?

Python Main Function is the beginning of any Python program. When we run a program, the interpreter runs the code sequentially and will not run the main function if imported as a module, but the Main Function gets executed only when it is run as a Python program.

Which is an example of a function that returns none?

An example of a function that returns None is print (). The goal of this function is to print objects to a text stream file, which is normally the standard output (your screen). So, this function doesn’t need an explicit return statement because it doesn’t return anything useful or meaningful:

Can a function return 42 without a return value?

This means that any time you call return_42 (), the function will send 42 back to the caller. Note: You can use explicit return statements with or without a return value. If you build a return statement without specifying a return value, then you’ll be implicitly returning None.

What happens when a function hits the return statement in Python?

As soon as a function hits a return statement, it terminates without executing any subsequent code. Consequently, the code that appears after the function’s return statement is commonly called dead code. The Python interpreter totally ignores dead code when running your functions.

Which is an example of a function that returns multiple values?

The built-in function divmod() is also an example of a function that returns multiple values. The function takes two (non-complex) numbers as arguments and returns two numbers, the quotient of the two input values and the remainder of the division: >>> >>>