迭代熊猫中的 csv 列表，返回权限错误

Question

我正试图遍历csv文件的文件夹，但被PermissionError阻止，奇怪的是，当我在windows 10机器上使用管理员帐户登录时，文件夹应该是可以访问的，而文件则在一个新文件夹中，安全设置为可以读写。我担心这是一个愚蠢的窗口权限问题，我花了很多小时试图解决这个问题：(。

import pandas as pd
import os

raw_data_path = 'C:\Users\jeppe\data\'   
filenames = os.listdir(raw_data_path)
for file in filenames:
df = pd.read_csv(f'{raw_data_path}{file}')

..append some code

PermissionError                           Traceback (most recent call last)
~AppDataLocalTemp/ipykernel_12388/436724791.py in <module>
----> 1 pd.read_csv(Path(f'{raw_data_path}{file}'))
~anaconda3libsite-packagespandasutil_decorators.py in wrapper(*args, **kwargs)
309                     stacklevel=stacklevel,
310                 )
--> 311             return func(*args, **kwargs)
312 
313         return wrapper
~anaconda3libsite-packagespandasioparsersreaders.py in read_csv(filepath_or_buffer, sep, delimiter, header, names, index_col, usecols, squeeze, prefix, mangle_dupe_cols, dtype, engine, converters, true_values, false_values, skipinitialspace, skiprows, skipfooter, nrows, na_values, keep_default_na, na_filter, verbose, skip_blank_lines, parse_dates, infer_datetime_format, keep_date_col, date_parser, dayfirst, cache_dates, iterator, chunksize, compression, thousands, decimal, lineterminator, quotechar, quoting, doublequote, escapechar, comment, encoding, encoding_errors, dialect, error_bad_lines, warn_bad_lines, on_bad_lines, delim_whitespace, low_memory, memory_map, float_precision, storage_options)
584     kwds.update(kwds_defaults)
585 
--> 586     return _read(filepath_or_buffer, kwds)
587 
588 
~anaconda3libsite-packagespandasioparsersreaders.py in _read(filepath_or_buffer, kwds)
480 
481     # Create the parser.
--> 482     parser = TextFileReader(filepath_or_buffer, **kwds)
483 
484     if chunksize or iterator:
~anaconda3libsite-packagespandasioparsersreaders.py in __init__(self, f, engine, **kwds)
809             self.options["has_index_names"] = kwds["has_index_names"]
810 
--> 811         self._engine = self._make_engine(self.engine)
812 
813     def close(self):
~anaconda3libsite-packagespandasioparsersreaders.py in _make_engine(self, engine)
1038             )
1039         # error: Too many arguments for "ParserBase"
-> 1040         return mapping[engine](self.f, **self.options)  # type: ignore[call-arg]
1041 
1042     def _failover_to_python(self):
~anaconda3libsite-packagespandasioparsersc_parser_wrapper.py in __init__(self, src, **kwds)
49 
50         # open handles
---> 51         self._open_handles(src, kwds)
52         assert self.handles is not None
53 
~anaconda3libsite-packagespandasioparsersbase_parser.py in _open_handles(self, src, kwds)
220         Let the readers open IOHandles after they are done with their potential raises.
221         """
--> 222         self.handles = get_handle(
223             src,
224             "r",
~anaconda3libsite-packagespandasiocommon.py in get_handle(path_or_buf, mode, encoding, compression, memory_map, is_text, errors, storage_options)
700         if ioargs.encoding and "b" not in ioargs.mode:
701             # Encoding
--> 702             handle = open(
703                 handle,
704                 ioargs.mode,
PermissionError: [Errno 13] Permission denied: 'C:\Users\jeppe\bot\data\.ipynb_checkpoints'

[1]: https://i.stack.imgur.com/6a3q0.png

Answer 1

有必要排除.ipynb_checkpoints文件，这可以通过这个简单的for循环来实现

for file in filenames:
if not file.startswith("."):
df = pd.read_csv(f'{raw_data_path}{file}')