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Groups > comp.lang.python > #78567

Function passed as an argument returns none

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Hi,
I am learning Python (version 3.4) strings.I have a function that takes in a
parameter and prints it out as given below.

def donuts(count):
  if count <= 5:
    print('Number of donuts: ',count)
  else:
    print('Number of donuts: many')
    return

It works fine if I call 
donuts(5)

It returns:
we have 5 DN  (as expected)

However if I do :

test(donuts(4), 'Number of donuts: 4')


where test is defined as below:

def test(got, expected):
  print('got: ', got, 'Expected:' ,expected)
  if got == expected:
    prefix = ' OK '
  else:
    prefix = '  X '
  print (('%s got: %s expected: %s') % (prefix, repr(got), repr(expected)))


Only 'None' gets passed on to parameter 'got' instead of the expected value
of 4.
Any idea why 'None' is getting passed even though calling the donuts(4)
alone returns the expected value?

Thanks,
Shiva.

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Thread

Function passed as an argument returns none Shiva <shivaji_tn@yahoo.com> - 2014-10-01 22:37 +0000
  Re: Function passed as an argument returns none Denis McMahon <denismfmcmahon@gmail.com> - 2014-10-02 00:23 +0000
  Re: Function passed as an argument returns none Rustom Mody <rustompmody@gmail.com> - 2014-10-01 19:29 -0700
    Re: Function passed as an argument returns none Chris Angelico <rosuav@gmail.com> - 2014-10-02 14:02 +1000
      Re: Function passed as an argument returns none Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-10-02 17:59 +1000
        Re: Function passed as an argument returns none cl@isbd.net - 2014-10-02 10:43 +0100
          Re: Function passed as an argument returns none Rustom Mody <rustompmody@gmail.com> - 2014-10-02 04:30 -0700
        Re: Function passed as an argument returns none Rustom Mody <rustompmody@gmail.com> - 2014-10-02 04:38 -0700
          Re: Function passed as an argument returns none Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-10-03 10:10 +1000
            Re: Function passed as an argument returns none Rustom Mody <rustompmody@gmail.com> - 2014-10-02 18:49 -0700
              Re: Function passed as an argument returns none Chris Angelico <rosuav@gmail.com> - 2014-10-03 12:08 +1000

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