[Python] Parse human-readable filesizes into bytes

example_strings = ["10.43 KB", "11 GB", "343.1 MB"]


I want to convert all this strings into bytes. So far I came up with this:

def parseSize(size):
if size.endswith(" B"):
size = int(size.rstrip(" B"))
elif size.endswith(" KB"):
size = float(size.rstrip(" KB")) * 1000
elif size.endswith(" MB"):
size = float(size.rstrip(" MB")) * 1000000
elif size.endswith(" GB"):
size = float(size.rstrip(" GB")) * 10000000000
elif size.endswith(" TB"):
size = float(size.rstrip(" TB")) * 10000000000000
return int(size)


But I don't like it and also I don't think it works. I could find only modules that do the opposite thing.

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