为什么在jupyter notebook中找不到文件?

Question

我不知道为什么不工作

import pandas as pd
df = pd.read_csv('pokedata.csv')
FileNotFoundError                         Traceback (most recent call last)
<ipython-input-1-a1266fea4180> in <module>
1 import pandas as pd
2 
----> 3 df = pd.read_csv('pokedata.csv')
~/opt/anaconda3/lib/python3.8/site-packages/pandas/io/parsers.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, dialect, error_bad_lines, warn_bad_lines, delim_whitespace, low_memory, memory_map, float_precision, storage_options)
608     kwds.update(kwds_defaults)
609 
--> 610     return _read(filepath_or_buffer, kwds)
611 
612 
~/opt/anaconda3/lib/python3.8/site-packages/pandas/io/parsers.py in _read(filepath_or_buffer, kwds)
460 
461     # Create the parser.
--> 462     parser = TextFileReader(filepath_or_buffer, **kwds)
463 
464     if chunksize or iterator:
~/opt/anaconda3/lib/python3.8/site-packages/pandas/io/parsers.py in __init__(self, f, engine, **kwds)
817             self.options["has_index_names"] = kwds["has_index_names"]
818 
--> 819         self._engine = self._make_engine(self.engine)
820 
821     def close(self):
~/opt/anaconda3/lib/python3.8/site-packages/pandas/io/parsers.py in _make_engine(self, engine)
1048             )
1049         # error: Too many arguments for "ParserBase"
-> 1050         return mapping[engine](self.f, **self.options)  # type: ignore[call-arg]
1051 
1052     def _failover_to_python(self):
~/opt/anaconda3/lib/python3.8/site-packages/pandas/io/parsers.py in __init__(self, src, **kwds)
1865 
1866         # open handles
-> 1867         self._open_handles(src, kwds)
1868         assert self.handles is not None
1869         for key in ("storage_options", "encoding", "memory_map", "compression"):
~/opt/anaconda3/lib/python3.8/site-packages/pandas/io/parsers.py in _open_handles(self, src, kwds)
1360         Let the readers open IOHanldes after they are done with their potential raises.
1361         """
-> 1362         self.handles = get_handle(
1363             src,
1364             "r",
~/opt/anaconda3/lib/python3.8/site-packages/pandas/io/common.py in get_handle(path_or_buf, mode, encoding, compression, memory_map, is_text, errors, storage_options)
640                 errors = "replace"
641             # Encoding
--> 642             handle = open(
643                 handle,
644                 ioargs.mode,
FileNotFoundError: [Errno 2] No such file or directory: 'pokedata.csv'

Answer 1

Run

import os
cwd = os.getcwd()
print(cwd)

查找您是否在'pokedata.csv'所在的预期目录中。

否则使用文件的绝对路径，或者将目录改为os.chdir()