[英]Pandas update and add rows one dataframe with key column in another dataframe
[英]Update column of a dataframe when key matches from another dataframe in pandas
删除列final
,使用带indicator
参数的左连接,因此可以通过比较both
来映射True, False
创建1,0
列:
df = df2.drop('final', axis=1).merge(df1, how='left', indicator='final')
df['final'] = df['final'].eq('both').astype(int)
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.