Please Help Understand Functions

[Larz60+]

first of all:

def enterNumbers():
    float(input("Type numbers: "))
    return

returns None, because you didn't tell it to return anything.
second:

float(input("Type numbers: "))

will fail, not written properly
so what you really want is (i changed function name to lower case, camel case should not be used for function names (PEP 8):

def enter_numbers():
    nums = input("Type numbers: ")
    nums = [float(item) for item in nums.split()]
    return nums

But now, nums will be a list of numbers (maybe only 1 element), but each will be a float
example:

Output:
enter_numbers()
Type numbers: 1 2 3 4
print(numbers)
[1.0, 2.0, 3.0, 4.0]

so code for enter_numbers needs to look like:

# Enter numbers and store them as "enterNumbers()" module?
def enterNumbers():
    nums = input("Type numbers: ")
    nums = [float(item) for item in nums.split()]
    return nums

And the other functions need to use this format:

# Enter numbers and store them as "enterNumbers()" module?
def enterNumbers():
    nums = input("Type numbers: ")
    nums = [float(item) for item in nums.split()]
    return nums


# This "calculate" module calls the "enterNumbers()" module, adds 1, and returns "a" which basically means "a" in the module IS "calculate()?"
def calculate():
    a = [item + 1.0 for item in enterNumbers()]
    return a


# This "main()" module calls both module to calculate?
def main():
    numbers = calculate()
    print(numbers)


if __name__ in '__main__':
    main()

if run:

Output:
Type numbers: 1 2 3 4 5
[2.0, 3.0, 4.0, 5.0, 6.0]