Python常用類型轉換實現

1.byte和str互轉

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

2.byte和int互轉

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

3.byte和float互轉

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互轉

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

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