How to find the start time and end time of an event in python?

Question

I have a data frame consists of column 1 i.e event and column 2 is Datetime:

Sample data

 Event   Time
    0   2020-02-12 11:00:00
    0   2020-02-12 11         


        

Answer 1

Assuming the dataframe is data:

current_event = None
result = []
for event, time in zip(data['Event'], data['Time']):
    if event != current_event:
        if current_event is not None:
            result.append([current_event, start_time, time])
        current_event, start_time = event, time
data = pandas.DataFrame(result, columns=['Event','EventStartTime','EventEndTime'])

The trick is to save your event number; if the next event number is not the same as the saved one, the saved one has to be ended and a new one started.