removing rows dataframe not in another dataframe using two columns

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Han
05 Jan 2017
1import pandas as pd
2
3USERS = pd.DataFrame({'email':['a@g.com','b@g.com','b@g.com','c@g.com','d@g.com']})
4print (USERS)
5     email
60  a@g.com
71  b@g.com
82  b@g.com
93  c@g.com
104  d@g.com
11
12EXCLUDE = pd.DataFrame({'email':['a@g.com','d@g.com']})
13print (EXCLUDE)
14     email
150  a@g.com
161  d@g.com
17
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Eleonora
07 Apr 2019
1df = pd.merge(df1, df2, how='left', indicator='Exist')
2df['Exist'] = np.where(df.Exist == 'both', True, False)
3df = df[df['Exist']==True].drop(['Exist','z'], axis=1)
4
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