Globals vs Function

[mcmxl22]

Is using a function like this to define variables ok? 

def variables(a, b):
    a = something
    b = another

def some_function():
    do something with variables(a).
    do something with variables(b).

What is the difference between using a function to define variables and just using globals like this?

a = something
b = another

def some_function():
    do something with a.
    do something with b.

[wavic]

Hello!
If you want to do something with outer to the function variables it's better to pass them as parameters.

num1 = 44
num2 = 55

def addition(a, b):
    returnt a + b

result = addition(num1, num2)
print(result)

Output:
99

Variables defined within the function are local to this function and exist as long as the function is running.

[ichabod801]

When you are using global variables in a local scope, you are cross scope boundaries. This can become confusing and hard to track. If you run into a problem with the values of a and b, it can be harder to figure out where a and b are being modified. If you are passing them around as parameters and return values, it becomes easier to track down where they might get modified.