TypeError: 参数应该是类似字节的对象或 ASCII 字符串，而不是 \'tuple\'答案

【问题标题】：TypeError: argument should be a bytes-like object or ASCII string, not 'tuple'TypeError: 参数应该是类似字节的对象或 ASCII 字符串，而不是 \'tuple\'
【发布时间】：2022-11-10 22:08:35
【问题描述】：

我想将字典内容写入文件并保存。我刚收到这条消息： TypeError: 参数应该是字节类对象或 ASCII 字符串，而不是“元组”

#Creation of dictionary
final_dict = {}
final_dict['file_name']=d['filename'] 
final_dict1 = {} 
final_dict1['binary']=temp
final_dict1['type']=temp1

V10=((['file_name']),(['binary']),(['type']))
print(V10)
(['file_name'], ['binary'], ['type'])

outputfile = open('XXXXX.pptx', 'wb')
outputfile.write(base64.b64decode(V10))
outputfile.close()  
TypeError                                 Traceback (most recent call last)
Input In [34], in <cell line: 2>()
      1 outputfile = open('XXXXX.pptx', 'wb')
----> 2 outputfile.write(base64.b64decode(V1))
      3 outputfile.close()

File ~\Anaconda3\lib\base64.py:80, in b64decode(s, altchars, validate)
     65 def b64decode(s, altchars=None, validate=False):
     66     """Decode the Base64 encoded bytes-like object or ASCII string s.
     67 
     68     Optional altchars must be a bytes-like object or ASCII string of length 2
   (...)
     78     in the input result in a binascii.Error.
     79     """
---> 80     s = _bytes_from_decode_data(s)
     81     if altchars is not None:
     82         altchars = _bytes_from_decode_data(altchars)

File ~\Anaconda3\lib\base64.py:45, in _bytes_from_decode_data(s)
     43     return memoryview(s).tobytes()
     44 except TypeError:
---> 45     raise TypeError("argument should be a bytes-like object or ASCII "
     46                     "string, not %r" % s.__class__.__name__) from None

TypeError: argument should be a bytes-like object or ASCII string, not 'tuple'

注意：我希望写入变量的内容：

{'file_name': 'ABCDERFROOEKWWKE.pptx'} {'binary': 'UEsXAAIXXXXXXXXXXXXXXXAACclAAATAAgCW0NvbnRlbnRfVHlwZXNdLFFFFBAIooAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

【问题讨论】：

V10 是一个元组，但 base64 用于字符串。说你想对一个元组进行base64解码是没有意义的
为什么期望它写 UEsXAAIXXXXXXXXXXXXXXXAACclAATAA...？那个字符串是从哪里来的？
@user253751, when i print the dictionary (print(final_dict, final_dict1)) i get this output:{'file_name': 'ABCDERFROOEKWWKE.pptx'} {'binary': 'UEsXAAIXXXXXXXXXXXXXXXAACclAAATAAgCW0NvbnRlbnRfVHlwZXNdLFFFFBAIooAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA That's what I want you to write to the file.
那你为什么写base64.b64decode(V10)？
我错过了在这里复制“0”。我再次运行代码，我得到相同的消息:(

标签： python json dictionary

【解决方案1】：

要写入文件，首先需要将对象转换为str 或bytes 对象，具体取决于写入模式（见Methods of File Objects）：

with open(file_name, "w") as file:
    file.write(str( my_object ))

如果您想在 base64 中编码（而不是解码）它，只需以二进制模式在 str(my_object).encode() 上调用 b64encode

相反，如果您想在编写字典之前对其值进行解码，则只需构造一个新字典 {k: b64decode(v) for k, v in old_dict.items()}

另外，由于您使用 json 作为标签，请查看 json.dump (Saving structured data with json)

【讨论】：