convert OpenShift text data to numbers in single unit

units.py

#!/usr/bin/python

import re

def convert_to_bytes(data):
    (number, unit) = re.search("([0-9]+)([A-Za-z]+)", data.strip()).groups()

    if unit.lower() == 'bi':
        return int(number)
    elif unit.lower() == 'ki':
        return int(number) * 1024
    elif unit.lower() == 'mi':
        return int(number) * 1024 * 1024
    elif unit.lower() == 'gi':
        return int(number) * 1024 * 1024 * 1024

    raise Exception("invalid input data: " + data)

def convert_to_kb(data):
    return float(convert_to_bytes(data)) / 1024

def convert_to_mb(data):
    return float(convert_to_kb(data)) / 1024

def convert_to_gb(data):
    return float(convert_to_mb(data)) / 1024


print convert_to_gb("1024Ki")
print convert_to_gb("1024Mi")
print convert_to_gb("1024Gi")
print convert_to_gb("734Mi")