如何替换Pandas.DataFrame上的整个列
问题描述：
我想将Pandas DataFrame上的整个列替换为另一个DataFrame中的另一列，下面的示例将阐明我要查找的内容
I would like to replace an entire column on a Pandas DataFrame with another column taken from another DataFrame, an example will clarify what I am looking for
import pandas as pd
dic = {'A': [1, 4, 1, 4], 'B': [9, 2, 5, 3], 'C': [0, 0, 5, 3]}
df = pd.DataFrame(dic)
df是
'A' 'B' 'C'
1 9 0
4 2 0
1 5 5
4 3 3
现在我有另一个名为df1的数据框，其列"E"为
Now I have another dataframe called df1 with a column "E" that is
df1['E'] = [ 4, 4, 4, 0]
，我想用df1的"E"列替换df的"B"列
and I would like to replace column "B" of df with column "E" of df1
'A' 'E' 'C'
1 4 0
4 4 0
1 4 5
4 0 3
我尝试了多种方式使用.replace()方法，但没有得到任何好处.你能帮我吗?
I tried to use the .replace() method in many ways but I didn't get anything good. Can you help me?