pandas Try using .loc[row

赋值代码：

# 对Connection Type分组 并对temp累计求和
wsw['Connection Number'] = wsw.groupby(['Connection Type'])['temp'].cumsum()

之后控制台警告：

 Try using .loc[row_indexer,col_indexer] = value instead

改为

wsw.loc[:, 'Connection Number'] = wsw.groupby(['Connection Type'])['temp'].cumsum()