如何在从数据帧中删除一些行后遍历数据帧

Question

我有一个数据帧，我从中删除了一些行。但是我一直面临的问题是，当我尝试根据索引值遍历数据帧时，由于数据帧中缺少某些索引，它给了我"关键错误！如何遍历数据帧？

dataset =pd.read_csv('sentimentAnalysis.csv') # dataset imported
dataset = dataset[dataset['reviews.rating']!=3] #dropped the rows which 
                                                 contain ratings =3
for i in range[0,5000]:    #encounter error at i = 222 cause that row is missing due to the previous line of code
    #XXXXXXXXXXXXXXXXXXX

Answer 1

过滤后必须重置索引：

dataset = dataset[dataset['reviews.rating']!=3].reset_index()