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How to check for multiple concurrent events in several rows for several columns at the same time in Python?

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http://stackoverflow.com – I am trying to sort huge load of .CSV files produced by our equipment but got stock with sorting part. Every file consists of 30+ columns and can have infinite number of rows. What I need to implement is how to check for events that happen in multiple columns for several rows concurrently. Like, for example I will need to check if any of the results: in column "Test_Res_1" had values less than 12 for for 15 consecutive testes in column "Test_Res_2" had values less than 5 for for 10 consecutive testes in column "Test_Div" had values less than 15 for for 20 consecutive testes in column "Test_t (HowTos)