def bytes_to_human(n):
  symbols = ('K','M','G','T','P','E','Z','Y')
  prefix = {}
  for i,s in enumerate(symbols):
    prefix[s] = 1 << (i + 1) * 10
  for s in reversed(symbols):
    if n >= prefix[s]:
      value = float(n) / prefix[s]
      return '%.1f%s' % (value,s)
  return '%sB' % n

python编写的储存单位转换代码(以字节(B)为单位)

def bytes(bytes):
  if bytes < 1024: #比特
    bytes = str(round(bytes, 2)) + ' B' #字节
  elif bytes >= 1024 and bytes < 1024 * 1024:
    bytes = str(round(bytes / 1024, 2)) + ' KB' #千字节
  elif bytes >= 1024 * 1024 and bytes < 1024 * 1024 * 1024:
    bytes = str(round(bytes / 1024 / 1024, 2)) + ' MB' #兆字节
  elif bytes >= 1024 * 1024 * 1024 and bytes < 1024 * 1024 * 1024 * 1024:
    bytes = str(round(bytes / 1024 / 1024 / 1024, 2)) + ' GB' #千兆字节
  elif bytes >= 1024 * 1024 * 1024 * 1024 and bytes < 1024 * 1024 * 1024 * 1024 * 1024:
    bytes = str(round(bytes / 1024 / 1024 / 1024 / 1024, 2)) + ' TB' #太字节
  elif bytes >= 1024 * 1024 * 1024 * 1024 * 1024 and bytes < 1024 * 1024 * 1024 * 1024 * 1024 * 1024:
    bytes = str(round(bytes / 1024 / 1024 / 1024 / 1024 / 1024, 2)) + ' PB' #拍字节
  elif bytes >= 1024 * 1024 * 1024 * 1024 * 1024 * 1024 and bytes < 1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024:
    bytes = str(round(bytes / 1024 / 1024 / 1024 / 1024 / 1024 /1024, 2)) + ' EB' #艾字节
  return bytes
 
if __name__ == '__main__':
  print('0:' + bytes(0))
  print('1:' + bytes(1))
  print('2:' + bytes(10))
  print('3:' + bytes(100))
  print('4:' + bytes(1000))
  print('5:' + bytes(10000))
  print('6:' + bytes(100000))
  print('7:' + bytes(1000000))
  print('8:' + bytes(10000000))
  print('9:' + bytes(100000000))
  print('10:' + bytes(1000000000))
  print('11:' + bytes(10000000000))
  print('12:' + bytes(100000000000))
  print('13:' + bytes(1000000000000))
  print('14:' + bytes(10000000000000))
  print('15:' + bytes(100000000000000))
  print('16:' + bytes(1000000000000000))
  print('17:' + bytes(10000000000000000))
  print('18:' + bytes(100000000000000000))
  print('19:' + bytes(1000000000000000000))
  print('20:' + bytes(10000000000000000000))
  print('20:' + bytes(100000000000000000000))
  print('20:' + bytes(1000000000000000000000))

测试:

"D:\Program Files\Python\Python36\python.exe" C:/Users/Jochen/PycharmProjects/mysite/bytes.py
0:0 B
1:1 B
2:10 B
3:100 B
4:1000 B
5:9.77 KB
6:97.66 KB
7:976.56 KB
8:9.54 MB
9:95.37 MB
10:953.67 MB
11:9.31 GB
12:93.13 GB
13:931.32 GB
14:9.09 TB
15:90.95 TB
16:909.49 TB
17:8.88 PB
18:88.82 PB
19:888.18 PB
20:8.67 EB
20:86.74 EB
20:867.36 EB

Process finished with exit code 0

标签:
Python字节单位转换,python,单位转换

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