Question

我目前正在学习Pandas进行数据分析，并且在Jupyter Notebook编辑器中读取csv文件时遇到了一些问题。

当我运行以下代码时：

import pandas as pd
df = pd.read_csv("C:\PythonHow\nycrime.csv")

我收到一条错误消息，以

结尾

FileNotFoundError: File b'C:\\PythonHow\nycrime.csv' does not exist

它的全长：

FileNotFoundError                         Traceback (most recent call last)
<ipython-input-36-75f2b616e06c> in <module>()
----> 1 lf2 = pd.read_csv("C:\PythonHow\nycrime.csv")

~\Anaconda3\lib\site-packages\pandas\io\parsers.py in parser_f(filepath_or_buffer, sep, delimiter, header, names, index_col, usecols, squeeze, prefix, mangle_dupe_cols, dtype, engine, converters, true_values, false_values, skipinitialspace, skiprows, nrows, na_values, keep_default_na, na_filter, verbose, skip_blank_lines, parse_dates, infer_datetime_format, keep_date_col, date_parser, dayfirst, iterator, chunksize, compression, thousands, decimal, lineterminator, quotechar, quoting, escapechar, comment, encoding, dialect, tupleize_cols, error_bad_lines, warn_bad_lines, skipfooter, skip_footer, doublequote, delim_whitespace, as_recarray, compact_ints, use_unsigned, low_memory, buffer_lines, memory_map, float_precision)
653                     skip_blank_lines=skip_blank_lines)
654 
--> 655         return _read(filepath_or_buffer, kwds)
656 
657     parser_f.__name__ = name

~\Anaconda3\lib\site-packages\pandas\io\parsers.py in _read(filepath_or_buffer, kwds)
403 
404     # Create the parser.
--> 405     parser = TextFileReader(filepath_or_buffer, **kwds)
406 
407     if chunksize or iterator:

~\Anaconda3\lib\site-packages\pandas\io\parsers.py in __init__(self, f, engine, **kwds)
762             self.options['has_index_names'] = kwds['has_index_names']
763 
--> 764         self._make_engine(self.engine)
765 
766     def close(self):

~\Anaconda3\lib\site-packages\pandas\io\parsers.py in _make_engine(self, engine)
983     def _make_engine(self, engine='c'):
984         if engine == 'c':
--> 985             self._engine = CParserWrapper(self.f, **self.options)
986         else:
987             if engine == 'python':

~\Anaconda3\lib\site-packages\pandas\io\parsers.py in __init__(self, src, **kwds)
   1603         kwds['allow_leading_cols'] = self.index_col is not False
   1604 
-> 1605         self._reader = parsers.TextReader(src, **kwds)
   1606 
   1607         # XXX

pandas/_libs/parsers.pyx in pandas._libs.parsers.TextReader.__cinit__ (pandas\_libs\parsers.c:4209)()

pandas/_libs/parsers.pyx in pandas._libs.parsers.TextReader._setup_parser_source (pandas\_libs\parsers.c:8873)()

FileNotFoundError: File b'C:\\PythonHow\nycrime.csv' does not exist

obs。：文件位于具有此确切名称的目录中

Answer 1

正如您在此处所见：FileNotFoundError: File b'C:\\PythonHow\nycrime.csv' does not exist字符串\n被解释为换行符：

解决方法是：

df = pd.read_csv("C:\\PythonHow\\nycrime.csv")

或者：

df = pd.read_csv(r"C:\PythonHow\nycrime.csv")

Answer 2

有时，添加两个反斜杠也可以解决问题。在路径之前添加df = pd.read_csv(r"C:\\PythonHow\\nycrime.csv")也会更正您的路径。

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Python无法使用Pandas导入CSV

2 个答案: