pandas remove rows based on a condition in several columns code example

Example 1: how to combine delete rows based on condition on another dataframe

import pandas as pd

USERS = pd.DataFrame({'email':['[email protected]','[email protected]','[email protected]','[email protected]','[email protected]']})
print (USERS)
     email
0  [email protected]
1  [email protected]
2  [email protected]
3  [email protected]
4  [email protected]

EXCLUDE = pd.DataFrame({'email':['[email protected]','[email protected]']})
print (EXCLUDE)
     email
0  [email protected]
1  [email protected]

Example 2: how to combine delete rows based on condition on another dataframe

print (USERS.email.isin(EXCLUDE.email))
0     True
1    False
2    False
3    False
4     True
Name: email, dtype: bool

print (~USERS.email.isin(EXCLUDE.email))
0    False
1     True
2     True
3     True
4    False
Name: email, dtype: bool

print (USERS[~USERS.email.isin(EXCLUDE.email)])
     email
1  [email protected]
2  [email protected]
3  [email protected]