Python常用类型转换实现

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

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

import structs=b'@zQ'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)

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