How can I multiply with the index?

Question

I need to convert a number to base 10. my input is from this form:1111(the number) 5(on which base) 10(to base).i wrote this code:

s=input()
(number, from_base, to_base) = s.split()
NumList=[number]
NumList.reverse()

i=0
sum=0


while (i< (index.from_base)):

  (i,pow(from_base,i),i+1) 
  sum=sum+i


print (sum)

I want to do: number^the from_base index.I tried also to do i**from_base\i^^from_base. I tried also to add the command NumList.index() but it didn't work.

thank you!

You can actually use the `int` function to do that http://docs.python.org/2/library/functions.html#int which takes an extra base argument when needed. — soulseekah, Dec 05 '12 at 16:34
@soulseekah... If the "to base" is always 10, is that right? — Savir, Dec 05 '12 at 16:35
@BorrajaX, correct, although the OP's code does mention `to_base`, so... — soulseekah, Dec 05 '12 at 16:37
int() has an optional second argument, an integer from 2 to 36, for base — James Waldby - jwpat7, Dec 05 '12 at 16:38
http://stackoverflow.com/questions/3973685/python-homework-converting-any-base-to-any-base — soulseekah, Dec 05 '12 at 16:39
i need to change it to the base the user want so i thought of, first convert to base 10 and then to the required base.I tried the function and this is the output:. Should I include some special directory? — user1869980, Dec 05 '12 at 16:44

score 1 · Answer 1 · answered Dec 05 '12 at 16:59

The commenters have already addressed the deeper problem that you're trying to solve.

But the superficial question that you're asking can be best solved by using Python's enumerate: Feed it a sequence of values and it returns a sequence of (index, value) pairs.

http://docs.python.org/2/library/functions.html#enumerate

How can I multiply with the index?

1 Answers1