uid,product,price
1,百度,200
2,360,300
3,腾讯,400

uid,name,product,age
1,李彦宏,百度,43
2,马化腾,腾讯,36
3,周鸿祎,360,34

import pandas as pd
person = pd.read_csv("source/person.csv")
product = pd.read_csv("source/product.csv")
info = pd.merge(person, product, on="product")
print(info.head(10))
"""
   uid_x name product  age  uid_y  price
0      1  李彦宏      百度   43      1    200
1      2  马化腾      腾讯   36      3    400
2      3  周鸿祎     360   34      2    300
"""