“Przelicz zapytanie SQL na Python Pandas” Kod odpowiedzi

Przelicz zapytanie SQL na Python Pandas

select a.passengerId passA,b.passengerId passB,count(*) numflightsTogether from df a inner join df  b on (a.flightid=b.flightid and a.date=b.date ) where a.passengerid != b.passengerid  group by a.passengerid,b.passengerid having count(*) >3