passing lists

Hi
Below is my function "retn" which works fine. However, how can I use this function to pass values from my lists and print 4 results.
eg - my lists
nav = [1,2,3,4]
qty = [5,6,7,8]
perc = [0.01,0.1,1.1,2.1]
.............................................................

def retn(nav,qty,perc):
    aum = nav * qty
    fee = aum * perc
    net = aum - fee
    return net
print(retn(4567.678,1256000000,0.01))

Regards
PHIL SawyerAsked:
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Mark BradyPrincipal Data EngineerCommented:
Should be fairly simple. Try this.
for i in xrange(0, len(nav)):
    print self.retn(nav[i], qty[i], perc[i])

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PHIL SawyerAuthor Commented:
Hi
I get an error - NameError: 'xrange' is not defined.
What is the (0, len(nav)) doing in your code?
Excuse my ignorance - new to this.

Regards
Mark BradyPrincipal Data EngineerCommented:
That is in version 2.2 of Python. Try changing it to range()
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PHIL SawyerAuthor Commented:
Hi
Now I get..........

NameError: name 'self' is not defined
PHIL SawyerAuthor Commented:
Hi
My Python version is 3.4.3 and my code that fails with the error is......
nav = [1,2,3,4]
qty = [5,6,7,8]
perc = [0.01,0.1,1.1,2.1]

def retn(nav,qty,perc):
    aum = nav * qty
    fee = aum * perc
    net = aum - fee
    return net

for i in range
etc
PHIL SawyerAuthor Commented:
Hi
I removed the self from "for i in range(self,0 ........ etc and it works.
Why would that be?
Regards
Mark BradyPrincipal Data EngineerCommented:
because in your code self is not defined. When writing code inside a "class" you refer to variables that you need to access in any function as self.[variable name]. If you are not writing a class then you don't need to worry about that.
PHIL SawyerAuthor Commented:
OK - got it.
Many thanks for your help.
PHIL SawyerAuthor Commented:
Thanks
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