Do not import any Python libraries. Assume that the start times are valid times. The minutes in the duration time will be a whole number less than 60, but the hour can be any whole number. Development ...

PyPy, for instance, is a just-in-time (JIT) Python compiler that converts Python to native machine code on the fly. PyPy can provide orders-of-magnitude speedups for many common operations.

If you're taking math or science courses, you'll most likely only be allowed to use a handheld calculator on exams.When you're on your own, you're better off using something like Python. Python's ...