[Python] how to calculate number of hour an employee work in each shift using python when he...

how to calculate number of hours an employee work in each shift using python when he worked from 18:00 -3:00 .
there are 3 Shifts shift 1-7:00 19:00 Shift 2-19:00 0:00 Shift 3 0:00 7:00

If not python then excel if it contains column with start and end time

it should return 1, 5 and 3 respectively.

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