运行代码如下:
import os
import pandas as pd
import requests
PATH='F:/Machine Learning/Python-Machine-Learning-Blueprints(python机器学习实践指南)/Chapter 01/iris/'
r=requests.get('https://archive.ics.uci.edu/ml/machine-learning-databases/iris/iris.data')
with open(PATH+'iris.data','w') as f:
f.write(r.text)
df=pd.read_csv(PATH+'iris.data', names=["sepal length", "sepal width", "petal length", "petal width", "class"])
结果报错:
---------------------------------------------------------------------------
OSError Traceback (most recent call last)
in ()
----> 1 df=pd.read_csv(PATH+'iris.data', names=["sepal length", "sepal width", "petal length", "petal width", "class"])
c:\users\administrator\appdata\local\programs\python\python36\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)
707 skip_blank_lines=skip_blank_lines)
708
--> 709 return _read(filepath_or_buffer, kwds)
710
711 parser_f.__name__ = name
c:\users\administrator\appdata\local\programs\python\python36\lib\site-packages\pandas\io\parsers.py in _read(filepath_or_buffer, kwds)
447
448 # Create the parser.
--> 449 parser = TextFileReader(filepath_or_buffer, **kwds)
450
451 if chunksize or iterator:
c:\users\administrator\appdata\local\programs\python\python36\lib\site-packages\pandas\io\parsers.py in __init__(self, f, engine, **kwds)
816 self.options['has_index_names'] = kwds['has_index_names']
817
--> 818 self._make_engine(self.engine)
819
820 def close(self):
c:\users\administrator\appdata\local\programs\python\python36\lib\site-packages\pandas\io\parsers.py in _make_engine(self, engine)
1047 def _make_engine(self, engine='c'):
1048 if engine == 'c':
-> 1049 self._engine = CParserWrapper(self.f, **self.options)
1050 else:
1051 if engine == 'python':
c:\users\administrator\appdata\local\programs\python\python36\lib\site-packages\pandas\io\parsers.py in __init__(self, src, **kwds)
1693 kwds['allow_leading_cols'] = self.index_col is not False
1694
-> 1695 self._reader = parsers.TextReader(src, **kwds)
1696
1697 # XXX
pandas\_libs\parsers.pyx in pandas._libs.parsers.TextReader.__cinit__()
pandas\_libs\parsers.pyx in pandas._libs.parsers.TextReader._setup_parser_source()
OSError: Initializing from file failed
路径、文件名都完整。错误提示1048,发现调用pandas的read_csv()方法时,默认使用C engine,当文件路径中包含中文名时,使用C engine会报错。将engine改为python,即可解决此问题。
解决方法:指明engine为python
df=pd.read_csv(path, names=["sepal length", "sepal width", "petal length", "petal width", "class"],\
engine = 'python')# 指明engine为Python