Python: function arguments and return values

Question

Say I have a function

def equals_to(x,y):
 a + b = c
def some_function(something):
 for i in something:
 ...

Is there a way to use c that was calculated by equals_to as a parameter for some_function like this

equals_to(1,2)
some_function(c)

I'm very confused by what you're trying to accomplish. equals_to doesn't compile, it looks like it's meant to return an integer, which wouldn't work in a for x in blah statement. — Dunes
– Dunes, Commented Dec 7, 2012 at 9:08
` def equals_to(x,y)` should have said def equals_to(a,b) I made a mistake while typing out the example. Also a + b = c should have been c = a + b — Keenan
– Keenan, Commented Dec 7, 2012 at 12:23

Chris Seymour · Accepted Answer · 2012-12-07 09:13:51Z

3

You need to return the value of c from the function.

def equals_to(x,y):
    c = x + y           # c = x + y not a + b = c
    return c            # return the value of c 

def some_function(something):
    for i in something:
    ... 
    return 

sum = equals_to(1,2)     # set sum to the return value from the function 
some_function(sum)       # pass sum to some_function

Also the function signature of equals_to takes the arguments x,y but in the function you use a,b and your assignment was the wrong way round, c takes the value of x + y not a + b equals c.

Strongly recommend: http://docs.python.org/2/tutorial/

edited Dec 7, 2012 at 9:13

answered Dec 7, 2012 at 9:07

Chris Seymour

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