我目前正在使用外连接合并2个数据帧,但在合并之后,我看到所有行都是重复的,即使我合并的列包含相同的值.详细地:
list_1 = pd.read_csv('list_1.csv')
list_2 = pd.read_csv('list_2.csv')
merged_list = pd.merge(list_1 , list_2 , on=['email_address'], how='inner')
具有以下输入和结果:
LIST_1:
email_address, name, surname
john.smith@email.com, john, smith
john.smith@email.com, john, smith
elvis@email.com, elvis, presley
list_2:
email_address, street, city
john.smith@email.com, street1, NY
john.smith@email.com, street1, NY
elvis@email.com, street2, LA
merged_list:
email_address, name, surname, street, city
john.smith@email.com, john, smith, street1, NY
john.smith@email.com, john, smith, street1, NY
john.smith@email.com, john, smith, street1, NY
john.smith@email.com, john, smith, street1, NY
elvis@email.com, elvis, presley, street2, LA
elvis@email.com, elvis, presley, street2, LA
我的问题是,不应该这样吗？
merged_list(我希望如何:D): …