我编写了一个脚本,从csv文件中提取表,并编写一个包含此表的新csv文件。 所以我有下面的代码:
import csv
import pandas as pd
with open("C:\\OpenFace\\x64\\Release\\processed\\webcam_2019-04-22-1552.csv") as csvfile:
ddf= pd.read_table(csvfile,sep=" ")
first_letters = ['eye']
headers = ddf.dtypes.index
df= pd.read_table(csvfile,sep=" ",names=[name for name in headers if (name[0] in first_letters)])
print(df)
我只想得到从眼睛开始的列名, 但我有个错误:
Traceback (most recent call last):
File "getpoints.py", line 8, in <module>
df= pd.read_table(csvfile,sep=" ",names=[name for name in headers if
(name[0] in first_letters)])
File "C:\Python36\lib\site-packages\pandas\io\parsers.py", line 678, in parser_f
return _read(filepath_or_buffer, kwds)
File "C:\Python36\lib\site-packages\pandas\io\parsers.py", line 440, in _read
parser = TextFileReader(filepath_or_buffer, **kwds)
File "C:\Python36\lib\site-packages\pandas\io\parsers.py", line 787, in __init__
self._make_engine(self.engine)
File "C:\Python36\lib\site-packages\pandas\io\parsers.py", line 1014, in _make_engine
self._engine = CParserWrapper(self.f, **self.options)
File "C:\Python36\lib\site-packages\pandas\io\parsers.py", line 1708, in __init__
self._reader = parsers.TextReader(src, **kwds)
File "pandas\_libs\parsers.pyx", line 542, in pandas._libs.parsers.TextReader.__cinit__
pandas.errors.EmptyDataError: No columns to parse from file
如何解决这个问题? 有什么想法吗
谢谢
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