인프런 커뮤니티 질문&답변

웹크롤러 제작 관련 중 오류가 계속해서 나와서 질문하는 바입니다. 샘플코드를 실행해도 다음과 같은 오류가 나서 질문드리는 바입니다. 웹크롤러 120일 전체 데이터를 받아오는 코드에 대해 질문드리는 바입니다.

 df_candle_temp = pd.read_json(webpage.content) 

에 대해 계속해서 오류가 나오는데,

TypeError: Expected file path name or file-like object, got <class 'bytes'> type

라는 말이 나오는데, 이 에러의 표면적인 뜻(?)는 알겠으나, 진짜로 왜 이 에러가 뜨는지, 그리고 어떻게 해결해야 하는지를 잘 모르겠어서 이렇게 질문드리는 바입니다.

아래는 에러 메시지입니다.

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
Cell In[14], line 22
     19 webpage = requests.get(url)
     21 #(3)JSON 형식 데이터 읽어서 임시 데이터프레임에 저장
---> 22 df_candle_temp = pd.read_json(webpage.content) 
     24 #(4) 새로받은 데이터를 기존 데이터프레임과 병합
     25 df_candle = pd.concat([df_candle,df_candle_temp],axis=0) 

File C:\python3111\Lib\site-packages\pandas\util\_decorators.py:211, in deprecate_kwarg.<locals>._deprecate_kwarg.<locals>.wrapper(*args, **kwargs)
    209     else:
    210         kwargs[new_arg_name] = new_arg_value
--> 211 return func(*args, **kwargs)

File C:\python3111\Lib\site-packages\pandas\util\_decorators.py:331, in deprecate_nonkeyword_arguments.<locals>.decorate.<locals>.wrapper(*args, **kwargs)
    325 if len(args) > num_allow_args:
    326     warnings.warn(
    327         msg.format(arguments=_format_argument_list(allow_args)),
    328         FutureWarning,
    329         stacklevel=find_stack_level(),
    330     )
--> 331 return func(*args, **kwargs)

File C:\python3111\Lib\site-packages\pandas\io\json\_json.py:733, in read_json(path_or_buf, orient, typ, dtype, convert_axes, convert_dates, keep_default_dates, numpy, precise_float, date_unit, encoding, encoding_errors, lines, chunksize, compression, nrows, storage_options)
    730 if convert_axes is None and orient != "table":
    731     convert_axes = True
--> 733 json_reader = JsonReader(
    734     path_or_buf,
    735     orient=orient,
    736     typ=typ,
    737     dtype=dtype,
    738     convert_axes=convert_axes,
    739     convert_dates=convert_dates,
    740     keep_default_dates=keep_default_dates,
    741     numpy=numpy,
    742     precise_float=precise_float,
    743     date_unit=date_unit,
    744     encoding=encoding,
    745     lines=lines,
    746     chunksize=chunksize,
    747     compression=compression,
    748     nrows=nrows,
    749     storage_options=storage_options,
    750     encoding_errors=encoding_errors,
    751 )
    753 if chunksize:
    754     return json_reader

File C:\python3111\Lib\site-packages\pandas\io\json\_json.py:818, in JsonReader.__init__(self, filepath_or_buffer, orient, typ, dtype, convert_axes, convert_dates, keep_default_dates, numpy, precise_float, date_unit, encoding, lines, chunksize, compression, nrows, storage_options, encoding_errors)
    815     if not self.lines:
    816         raise ValueError("nrows can only be passed if lines=True")
--> 818 data = self._get_data_from_filepath(filepath_or_buffer)
    819 self.data = self._preprocess_data(data)

File C:\python3111\Lib\site-packages\pandas\io\json\_json.py:858, in JsonReader._get_data_from_filepath(self, filepath_or_buffer)
    851 filepath_or_buffer = stringify_path(filepath_or_buffer)
    852 if (
    853     not isinstance(filepath_or_buffer, str)
    854     or is_url(filepath_or_buffer)
    855     or is_fsspec_url(filepath_or_buffer)
    856     or file_exists(filepath_or_buffer)
    857 ):
--> 858     self.handles = get_handle(
    859         filepath_or_buffer,
    860         "r",
    861         encoding=self.encoding,
    862         compression=self.compression,
    863         storage_options=self.storage_options,
    864         errors=self.encoding_errors,
    865     )
    866     filepath_or_buffer = self.handles.handle
    867 elif (
    868     isinstance(filepath_or_buffer, str)
    869     and filepath_or_buffer.lower().endswith(
   (...)
    872     and not file_exists(filepath_or_buffer)
    873 ):

File C:\python3111\Lib\site-packages\pandas\io\common.py:900, in get_handle(path_or_buf, mode, encoding, compression, memory_map, is_text, errors, storage_options)
    895     is_wrapped = not (
    896         isinstance(ioargs.filepath_or_buffer, str) or ioargs.should_close
    897     )
    899 if "r" in ioargs.mode and not hasattr(handle, "read"):
--> 900     raise TypeError(
    901         "Expected file path name or file-like object, "
    902         f"got {type(ioargs.filepath_or_buffer)} type"
    903     )
    905 handles.reverse()  # close the most recently added buffer first
    906 if ioargs.should_close:

TypeError: Expected file path name or file-like object, got <class 'bytes'> type