代码不适用于每行列内容中的stopwords

Question

此行不会从列内容的每一行中删除停止字

 df = pd.read_csv (r'C:\Users\mukesh_gupta\PycharmProjects\Doc_analysis\src\student99.csv')

df.columns = ["FILE", "EXT", "CONTENT", "CATEGORY"]
df['CONTENT'] = df['CONTENT'].apply(lambda x: ' '.join([word for word in x.split() if word not in (stop)]))