熊猫长度不匹配

Question

我正在尝试运行此代码，但每次都给我同样的错误。

def concatenate(indir="E:\\HOME\\NBAStats\\PlayByPlay",outfile="E:\\HOME\\NBAStats\\PlayByPlay\\Concatenated.csv",sep='\t'):
        os.chdir(indir)
        filelist=glob.glob("*.csv")
        dflist=[]
        colnames=['game_id', 'data_set', 'date', 'a1', 'a2', 'a3', 'a4', 'a5', 'h1', 'h2', 'h3', 'h4', 'h5', 'period', 'away_score', 'home_score', 'remaining_time', 'elapsed', 'play_length', 'play_id', 'team', 'event_type', 'assist', 'away', 'home', 'block', 'entered', 'left', 'num', 'opponent', 'outof', 'player', 'points', 'possession', 'reason', 'result', 'steal', 'type', 'shot_distance', 'original_x', 'original_y', 'converted_x', 'converted_y', 'description']
        for filename in filelist:
            print(filename)
            df=pandas.read_table(filename, header=None)
            dflist.append(df)
        concatdf=pandas.concat(dflist,axis=0)
        print(type(concatdf))
        concatdf.columns=colnames
        concatdf.head()
        concatdf.to_csv(outfile,index=False)

错误是：

ValueError：长度不匹配：预期轴有 1 个元素，新值 有44个元素

Answer 1

这是使用 read_csv 而不是 read_table 发生的 Vale 错误

>        File "<ipython-input-8-24ad9c1ee739>", line 1, in <module>
>     runfile('C:/Users/Fede/ToConcatenateNBA.py', wdir='C:/Users/Fede')
> 
>   File
> "C:\Users\Fede\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py",
> line 880, in runfile
>     execfile(filename, namespace)
> 
>   File
> "C:\Users\Fede\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py",
> line 102, in execfile
>     exec(compile(f.read(), filename, 'exec'), namespace)
> 
>   File "C:/Users/Fede/ToConcatenateNBA.py", line 29, in <module>
>     concatenate()
> 
>   File "C:/Users/Fede/ToConcatenateNBA.py", line 25, in concatenate
>     concatdf.columns=colnames
> 
>   File
> "C:\Users\Fede\Anaconda3\lib\site-packages\pandas\core\generic.py",
> line 2983, in __setattr__
>     return object.__setattr__(self, name, value)
> 
>   File "pandas\_libs\src\properties.pyx", line 65, in
> pandas._libs.lib.AxisProperty.__set__ (pandas\_libs\lib.c:45103)
> 
>   File
> "C:\Users\Fede\Anaconda3\lib\site-packages\pandas\core\generic.py",
> line 471, in _set_axis
>     self._data.set_axis(axis, labels)
> 
>   File
> "C:\Users\Fede\Anaconda3\lib\site-packages\pandas\core\internals.py",
> line 2836, in set_axis
>     (old_len, new_len))
> 
> ValueError: Length mismatch: Expected axis has 46 elements, new values
> have 44 elements