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python str和bytes 互相轉換

# 位元組 物件
b = b"lishaoshu"

# str 物件  
s = "lishaoshu"  

# str to bytes  
sb = bytes(s, encoding = "utf8")  

# bytes to str  
bs = str(b, encoding = "utf8")  

# 方法二
# str to bytes  
sb2 = str.encode(s)  

# bytes to str  
bs2 = bytes.decode(b)