将byte 转换成MB,GB

from django.template.defaultfilters import filesizeformat

total = 1077772160  # 单位是byte
s = filesizeformat(total)
print(s)  # 1.0GB

total = 829145600  # 单位是byte
s = filesizeformat(total)
print(s)  # 890MB

根据MB,GB转换成byte

UNIT_KB = 'kb'
UNIT_MB = 'mb'
UNIT_GB = 'gb'
UNIT_TB = 'tb'
UNIT_PB = 'pb'

UNIT_KIB = 'kib'
UNIT_MIB = 'mib'
UNIT_GIB = 'gib'
UNIT_TIB = 'tib'
UNIT_PIB = 'pib'

def get_file_size_unit(unit_type):
    table = {
        # decimal
        UNIT_KB: 10 ** 3,
        UNIT_MB: 10 ** 6,
        UNIT_GB: 10 ** 9,
        UNIT_TB: 10 ** 12,
        UNIT_PB: 10 ** 15,

        # binary
        UNIT_KIB: 1 << 10,
        UNIT_MIB: 1 << 20,
        UNIT_GIB: 1 << 30,
        UNIT_TIB: 1 << 40,
        UNIT_PIB: 1 << 50,
    }

    unit_type = unit_type.lower()
    if unit_type not in table.keys():
        raise TypeError('Invalid unit type')

    return table.get(unit_type)

s = get_file_size_unit('MB')
print(s)  # 1000000