Hey guys, I have a question that I am a list of numbers and I need to use functions to find the average. I think I pretty much have it, but I can not get it to print the average. Can you please tell me what is wrong.
nums = [30,34,40,36,36,28,29,32,34,44,36,35,28,33,29,40,36,24,26,30,30,32,34,32,28,36,24,32]
def average(nums):
return sum(nums) / len(nums)
sarnold
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The nums you are using in your def is not your list its a variable that will represent the argument you pass to the function.topless– topless2011年04月12日 21:20:52 +00:00Commented Apr 12, 2011 at 21:20
2 Answers 2
Have you tried print average(nums)? The code you have so far is just defining the function. It isn't doing anything with it. You have to call the function with its parameters and then do something with its return value (i.e. use the print function).
answered Apr 12, 2011 at 21:16
asthasr
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Comments
Basically your problem is this: int / int = int. You instead probably want one of these:
int / float = floatfloat / int = float
Try this:
nums = [30,34,40,36,36,28,29,32,34,44,36,35,28,33,
29,40,36,24,26,30,30,32,34,32,28,36,24,32]
def average(n):
return sum(n) / float(len(n))
print average(nums)
answered Apr 12, 2011 at 21:17
bradley.ayers
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1 Comment
mechanical_meat
+1. From Python 2.5 or so you can do:
from __future__ import division to have the / operator represent "true division" as opposed to "floor division"; more here: python.org/dev/peps/pep-0238 lang-py