from functools import reduce

def str2float(s): def char2num(s): return {'0':0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9}[s]

def fn(x,y):
    return x * 10 + y

L = list(s)
for i in range(len(L)):
    if L[-i] == '.':
        L.pop(-i)
        num1 = reduce(fn,map(char2num,L))
        num2 = num1/10**(i-1)
        print(num2)

str2float('112.32')