我正在尝试加载一个 csv 文本文件,该文件是我使用以 Objective-C(使用 XCode)编写的 OS X 应用程序创建的。文本文件 (temp2.csv) 在编辑器中看起来不错,但它有问题,在将它读入 Pandas 数据帧时出现此错误。如果我将数据复制到一个新的文本文件 (temp.csv) 中并保存它就可以正常工作!这两个文本文件明显不同(一个是 74 字节,另一个是 150 字节)——也许是不可见字符? - 但它非常烦人,因为我希望 python 代码加载 C 代码生成的文本文件。附上文件以供引用。
临时.csv
-3.132700,0.355885,9.000000,0.444416
-3.128256,0.444416,9.000000,0.532507
temp2.csv
-3.132700,0.355885,9.000000,0.444416
-3.128256,0.444416,9.000000,0.532507
(我在 StackExchange 上找不到关于这个特定错误的任何帮助)。
Python 2.7.11 |Anaconda 2.2.0 (x86_64)| (default, Dec 6 2015, 18:57:58)
[GCC 4.2.1 (Apple Inc. build 5577)] on darwin
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>>> import pandas as pd
>>> df = pd.read_csv("temp2.csv", header=None)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/billtubbs/anaconda/lib/python2.7/site-packages/pandas/io/parsers.py", line 498, in parser_f
return _read(filepath_or_buffer, kwds)
File "/Users/billtubbs/anaconda/lib/python2.7/site-packages/pandas/io/parsers.py", line 275, in _read
parser = TextFileReader(filepath_or_buffer, **kwds)
File "/Users/billtubbs/anaconda/lib/python2.7/site-packages/pandas/io/parsers.py", line 590, in __init__
self._make_engine(self.engine)
File "/Users/billtubbs/anaconda/lib/python2.7/site-packages/pandas/io/parsers.py", line 731, in _make_engine
self._engine = CParserWrapper(self.f, **self.options)
File "/Users/billtubbs/anaconda/lib/python2.7/site-packages/pandas/io/parsers.py", line 1103, in __init__
self._reader = _parser.TextReader(src, **kwds)
File "pandas/parser.pyx", line 515, in pandas.parser.TextReader.__cinit__ (pandas/parser.c:4948)
File "pandas/parser.pyx", line 717, in pandas.parser.TextReader._get_header (pandas/parser.c:7496)
File "pandas/parser.pyx", line 829, in pandas.parser.TextReader._tokenize_rows (pandas/parser.c:8838)
File "pandas/parser.pyx", line 1833, in pandas.parser.raise_parser_error (pandas/parser.c:22649)
pandas.parser.CParserError: Error tokenizing data. C error: EOF following escape character
>>> df = pd.read_csv("temp.csv", header=None)
>>> df
0 1 2 3
0 -3.132700 0.355885 9 0.444416
1 -3.128256 0.444416 9 0.532507
脚注: 我想我找到了问题所在。
>>> f = open('temp2.csv')
>>> contents = f.read()
>>> print contents
??-3.132700,0.355885,9.000000,0.444416
-3.128256,0.444416,9.000000,0.532507
>>> contents
'\xff\xfe-\x003\x00.\x001\x003\x002\x007\x000\x000\x00,\x000\x00.\x003\x005\x005\x008\x008\x005\x00,\x009\x00.\x000\x000\x000\x000\x000\x000\x00,\x000\x00.\x004\x004\x004\x004\x001\x006\x00\n\x00-\x003\x00.\x001\x002\x008\x002\x005\x006\x00,\x000\x00.\x004\x004\x004\x004\x001\x006\x00,\x009\x00.\x000\x000\x000\x000\x000\x000\x00,\x000\x00.\x005\x003\x002\x005\x000\x007\x00'
里面全是转义字符!如何删除它们?
最佳答案
您需要将参数encoding
添加到read_csv
, 因为文件编码是 UTF-16
:
import pandas as pd
contents = '\xff\xfe-\x003\x00.\x001\x003\x002\x007\x000\x000\x00,\x000\x00.\x003\x005\x005\x008\x008\x005\x00,\x009\x00.\x000\x000\x000\x000\x000\x000\x00,\x000\x00.\x004\x004\x004\x004\x001\x006\x00\n\x00-\x003\x00.\x001\x002\x008\x002\x005\x006\x00,\x000\x00.\x004\x004\x004\x004\x001\x006\x00,\x009\x00.\x000\x000\x000\x000\x000\x000\x00,\x000\x00.\x005\x003\x002\x005\x000\x007\x00'
text_file = open("test/file1.csv", "wb")
text_file.write(contents)
text_file.close()
df = pd.read_csv("test/file1.csv", header=None, encoding='utf-16')
print df
0 1 2 3
0 -3.132700 0.355885 9 0.444416
1 -3.128256 0.444416 9 0.532507
关于python - 标记化数据时出错。 C 错误 : EOF following escape character,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/34714070/