python bytes字节换算

python bytes字节换算

#!/usr/bin/env python
# -*- coidng:utf-8 -*-
def bytes_conversion(number):
    symbols = ('K','M','G','T','P','E','Z','Y')
    prefix = dict()
    for i,s in enumerate(symbols):
        prefix[s] = 1<<(i+1) *10
    for s in reversed(symbols):
        if int(number) >= prefix[s]:
            value = float(number) / prefix[s]
            return '%.2f%s' %(value,s)
    return "%sB" %number