问题描述
这是东西，我有类似的东西
col1 col2
This is a blue book blue book above
This is a green ball this is a ball
What is your name blue book above
我想这样创建col3：
col1 col2 col3
this is a blue book blue book above this is a blue book above
this is a green ball this is a ball this is a green ball
what is your name blue book above what is your name blue book above
我找不到使这项工作成功的方法
解决方法
在Pandas中连接两个字符串列，但不包括重复的单词 从第二个开始
尝试一下：
def f(r):
c1,c2 = r
s1 = c1.split(" ")
s2 = c2.split(" ")
s3 = [s for s in s2 if s not in s1]
return c1+" "+" ".join(s3)
df["col3"] = df[["col1","col2"]].apply(f,axis=1)
df
col1 col2 col3
0 this is a blue book blue book above this is a blue book above
1 this is a green ball this is a ball this is a green ball
2 what is your name blue book above what is your name blue book above