如何删除标点符号时纠正错误

Question

我创建了如图所示的数据框。然后，我想删除标点符号。此函数将返回纯文本。我使用的是熊猫，每行将包含每行文本的干净版本。代码如下：

#Regular Expressions
def preprocess(text):
    clean_data = []
    for x in (text[:][0]): #this is Df_pd for Df_np (text[:])
        new_text = re.sub('<.*?>', '', x)   # remove HTML tags
        new_text = re.sub(r'[^\w\s]', '', new_text) # remove punc.
        new_text = re.sub(r'\d+','',new_text)# remove numbers
        new_text = new_text.lower() # lower case, .upper() for upper          
        if new_text != '':
            clean_data.append(new_text)
    return clean_data

然后我像这样应用它：

clean_test = preprocess(berita)
print(clean_test)

然后我得到了这样的错误：

---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
~\Anaconda3\lib\site-packages\pandas\core\indexes\base.py in get_loc(self, key, method, tolerance)
   2896             try:
-> 2897                 return self._engine.get_loc(key)
   2898             except KeyError:

pandas\_libs\index.pyx in pandas._libs.index.IndexEngine.get_loc()

pandas\_libs\index.pyx in pandas._libs.index.IndexEngine.get_loc()

pandas\_libs\hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item()

pandas\_libs\hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item()

KeyError: 0

During handling of the above exception, another exception occurred:

KeyError                                  Traceback (most recent call last)
<ipython-input-31-17480cb1ec78> in <module>
----> 1 clean_test = preprocess(berita)
      2 print(clean_test)

<ipython-input-21-61598ecfd3e5> in preprocess(text)
      2 def preprocess(text):
      3     clean_data = []
----> 4     for x in (text[:][0]): #this is Df_pd for Df_np (text[:])
      5         new_text = re.sub('<.*?>', '', x)   # remove HTML tags
      6         new_text = re.sub(r'[^\w\s]', '', new_text) # remove punc.

~\Anaconda3\lib\site-packages\pandas\core\frame.py in __getitem__(self, key)
   2978             if self.columns.nlevels > 1:
   2979                 return self._getitem_multilevel(key)
-> 2980             indexer = self.columns.get_loc(key)
   2981             if is_integer(indexer):
   2982                 indexer = [indexer]

~\Anaconda3\lib\site-packages\pandas\core\indexes\base.py in get_loc(self, key, method, tolerance)
   2897                 return self._engine.get_loc(key)
   2898             except KeyError:
-> 2899                 return self._engine.get_loc(self._maybe_cast_indexer(key))
   2900         indexer = self.get_indexer([key], method=method, tolerance=tolerance)
   2901         if indexer.ndim > 1 or indexer.size > 1:

pandas\_libs\index.pyx in pandas._libs.index.IndexEngine.get_loc()

pandas\_libs\index.pyx in pandas._libs.index.IndexEngine.get_loc()

pandas\_libs\hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item()

pandas\_libs\hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item()

KeyError: 0

我怎么错？之前感谢

Answer 1

此行没有意义：

for x in (text[:][0]):

应该是：

for x in text['news']: