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*
AttributeError: 'str' object has no attribute 'decode'. Did you mean: 'encode'?
原因：一般是因为 str 的类型本身不是 bytes，所以不能解码。
*
这是由于 py2 与 py3 字符串 编码上的区别 导致的。
# 这是 py2 的写法 name = "中国" name_utf8 = name.decode('utf-8') print(name, name_utf8
) # 输出：中国 中国 # 这是 py3 的写法 name = "中国" name_bytes = name.encode('utf-8')
name_utf8= name_bytes.decode('utf-8') print(name, name_bytes, name_utf8) #
输出：中国 b'\xe4\xb8\xad\xe5\x9b\xbd' 中国 # 不填使用默认编码格式 name = "中国" name_bytes = name.
encode() name_utf8 = name_bytes.decode() print(name, name_bytes, name_utf8) ##
概念: 1、普通 str：可理解的语义。 2、字节流 str(bytes)：0101010101，字节类型其实就是 2 进制格式，
不过为了易于理解和计算，通常用 16 进制来表示， 也就是 b'\xe4\xb8\...，b 开头代表是 bytes 类型。 ## 语法
1、Encode(编码)：把普通字符串 转为 机器可识别的 bytes。 2、Decode(解码)：把bytes转为字符串。 ## 语法记忆小技巧 1、编码
encode，就是把你认识的转为机器认识的。 2、解码 decode，就是把机器认识的解释为人能读懂的。 ## 差异 1、py3 的 str 默认不是
bytes，所以不能 decode，只能先 encode 转为 bytes，再 decode。 2、py2 的 str 默认是 bytes，所以能
decode。 ## 结论 所以 str.decode 本质是 bytes 类型的 str 的 decode py3 经常出现 AttributeError:
‘str’ object has no attribute ‘decode’
