阅读csv;替换值并保存在csv上

Question

我有一个csv文件，我想通过删除所有的“-”来修改第一列。
之后，我想将更改保存在同一第一栏中。

import pandas as pd
clean_order = pd.read_csv('C:/Users/(...)/Page_Clean_test.csv', 'w+', delimiter=';', skiprows=0, low_memory=False) 
clean_order.loc[clean_order['web_scraper_order'].fillna('').str.replace('-', ''), 'web_scraper_order']
clean_order.to_csv('C:/Users/(...)/Page_Clean_test.csv', index=False)

Error:  
File "C:\Users\suiso\PycharmProjects\Teste_SA\venv\lib\site-packages\pandas\core\indexes\base.py", line 2889, in get_loc
    return self._engine.get_loc(casted_key)
  File "pandas\_libs\index.pyx", line 70, in pandas._libs.index.IndexEngine.get_loc
  File "pandas\_libs\index.pyx", line 97, in pandas._libs.index.IndexEngine.get_loc
  File "pandas\_libs\hashtable_class_helper.pxi", line 1675, in pandas._libs.hashtable.PyObjectHashTable.get_item
  File "pandas\_libs\hashtable_class_helper.pxi", line 1683, in pandas._libs.hashtable.PyObjectHashTable.get_item
KeyError: 'web_scraper_order'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:/Users/suiso/PycharmProjects/Teste_SA/Clean Data/Dataframe_comments.py", line 21, in <module>
    clean_order.loc[clean_order['web_scraper_order'].fillna('').str.replace('-', ''), 'web_scraper_order']
  File "C:\Users\suiso\PycharmProjects\Teste_SA\venv\lib\site-packages\pandas\core\frame.py", line 2899, in __getitem__
    indexer = self.columns.get_loc(key)
  File "C:\Users\suiso\PycharmProjects\Teste_SA\venv\lib\site-packages\pandas\core\indexes\base.py", line 2891, in get_loc
    raise KeyError(key) from err
KeyError: 'web_scraper_order'

Answer 1

尝试更改：

clean_order.loc[clean_order['web_scraper_order'].fillna('').str.replace('-', ''), 'web_scraper_order']

收件人：

clean_order = clean_order[clean_order.loc['web_scraper_order'].fillna('').str.replace('-', '')]

Answer 2

您可以使用

clean_order['web_scraper_order']=clean_order['web_scraper_order'].str.replace('-','')
clean_order.to_csv('filename.csv',index=Flase)