Python常用类型转换实现

1.byte和str互转

b = b"example"  s = "example"  bytes(s, encoding = "utf8")  str(b, encoding = "utf-8")

2.byte和int互转

b=b'x01x02' num=int.from_bytes(b,'little') b1=num.to_bytes(2,'little')

3.byte和float互转

import struct s=b'@zQx16' def byteToFloat(b):   return struct.unpack('!f',s)[0]  def floatToBytes(f):   bs = struct.pack("f",f)   return bytes((bs[3],bs[2],bs[1],bs[0])) f1=byteToFloat(s) floatToBytes(f1)

4.str和bytearray互转

str1='aaabb' ba=bytearray(str1,encoding='utf-8') str2=ba.decode('utf8')

推荐教程：《Python教程》