Convert Human Readable Sizes to Bytes

dehumanize.py

def parse_size_to_bytes(size):
    """
    Convert Human Readable Sizes to Bytes
    https://gist.github.com/Caffe1neAdd1ct/2b8f1a51c39e471119663c93f24d33fe
    :param size: String representing size in a human readable format
    :return:
    """
    units = 'bkmgtpezy'
    unit_index = -1

    matches = re.search(
        "^(?P<size>[0-9?]+)\s?(?P<unit>[{units}]?)".format(units=units),
        size,
        re.IGNORECASE
    )

    unit = matches.group('unit').lower().replace(',', '')
    size = int(matches.group('size'))

    if unit != '':
        unit_index = units.index(unit)

    if unit_index >= 0:
        size = size * pow(1024, unit_index)

    return round(size, 0)