我的输入数据框如下：
Store PG1 PG2 PG3 PG4
500 1 Women 02 Shirts 02 S-S_Woven_Shirts 02 Checked-Striped-
552 2 Baby
600 4 Boys 00 Denim All
704 5 Girls 01 Jackets 15 Woven blouses, tops
Store MinThreshold MaxThreshold PG1 PG2 PG3 PG4
552 0 10 2 Baby
552 2 15 2 Baby 00 Denim All
600 3 16 5 Girls
600 4 17 4 Boys 00 Denim All
704 5 18 5 Girls 01 Jackets 15 Woven blouses, tops
704 10 20 0 Men 00 Denim_Bottoms 02 Capris
500 6 19 1 Women 02 Shirts 02 S-S_Woven_Shirts 02 Checked-Striped-Patterned_Shirts-Tops-Blouses
所需的输出为；
Store PG1 PG2 PG3 PG4 MinThreshold MaxThreshold
500 1 Women 02 Shirts 02 S-S_Woven_Shirts 02 Checked-Striped- 6 19
552 2 Baby 2 15
600 4 Boys 00 Denim All 4 17
704 5 Girls 01 Jackets 15 Woven blouses, tops 5 18
我想基于“存储”，“ PG1”，“ PG2”，“ PG3”和“ PG4”将阈值从第二数据帧添加到第一数据帧。
我尝试过了
df1 = pd.merge(df1, df2, how='left',
left_on=["Store","PG1","PG2","PG3","PG4"], right_on =["Store","PG1","PG2","PG3","PG4"])
您能帮我吗？