[randlet]

    floats = [float(v) for v in integerList]

or less idiomatic

    floats = map(float, integerList)

[wiredfool]

Except that these are different -- the second returns an iterator (at least in python3). You'd need

   list(map(float, integerList)) 

for them to be equivalent.

(It doesn't matter in a lot of cases, but there are enough edges where it does. Json serialization for one)