str 转 bytes

非原创，复制转载。
写的巨好，每次都找这个文章，每次都找好久，这次记下来，emmm.....记下来

# bytes object  
b = b"example"

# str object  
s = "example"

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

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

# an alternative method

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

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

原文链接：https://gaoming.blog.csdn.net/article/details/88757223