How to optimize a Python typecast function?

I’m trying to convert an int to float. But I have to optimize my function even further.

It’s taking 3.3 seconds to run this function:

convertIntToFloat(100000000)
# 100000000.0

This is the function:

def convertIntToFloat(int):
  returnValue = sum(range(int))/int*2+1
  return returnValue

>Solution :

You can do something simple like this:

def convertIntToFloat(number):
  return number + 0.0

Or this (although division is slower than addition):

def convertIntToFloat(number):
  return number / 0.0