adding variable to python function using other variable

Question

I would like pass the variables into the function that uses range(). How do I pass variable C that has more then one number via one variable. Something like range(5, 10, 2)?

Here is my example code:

a = 0
b = 10
c = 2   
def num_count(a, b, c):
        for number in range(c):
            a += b
        print("New Count is: {0}".format(a))

I tried passing it as a string and converting it to an integer as well as by using a list. Nothing worked.

Create the range outside the function and pass it in…? What's the best approach is very debatable with such artificial scenarios. — deceze
– deceze ♦, Commented Jul 5, 2017 at 19:26
It means "expand this variable" so it becomes three arguments to range. See docs.python.org/3/tutorial/… — khelwood
– khelwood, Commented Jul 5, 2017 at 19:33

Alter · Accepted Answer · 2017-07-05 19:38:16Z

3

you can pass in the range like you mentioned with only a small change to the for loop

a = 0
b = 10
c = range(5, 10, 2)   
def num_count(a, b, c):
    for number in c:
        a += b
    print("New Count is: {0}".format(a))

num_count(a,b,c)

or, as khelwood* mentioned, pass in a list/tuple and expand it with *

a = 0
b = 10
c = (5, 10, 2)   
def num_count(a, b, c):
    for number in range(*c):
        a += b
    print("New Count is: {0}".format(a))

num_count(a,b,c)

both output 30 which is expected

edited Jul 5, 2017 at 19:38

answered Jul 5, 2017 at 19:32

Alter

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