import re

re_string = "(\d+\.\d+|\d+|)(\D*)\s(ohms)"

inputs = [
"10 ohms",
"100 ohms",
"220 ohms",
"330 ohms",
"470 ohms",
"680 ohms",
"1k ohms",
"10k ohms",
"22k ohms",
"47k ohms",
"4.7k ohms",
"100k ohms",
"330k ohms",
"2M ohms"
]

for input in inputs:
    i = re.search(re_string, input)
    print(i.group(1))
    print(i.group(2))
    print(i.group(3))