For quick and dirty benchmarking, timeit.main() is one of the handiest
tools out there, but calling it from Python code is a little tedious
since you need to construct a fake list of command line arguments in
order to call it.

What would be nice is a convenience function that accepted appropriate
arguments, with timeit.main being refactored to parse the command line
arguments and then call the new convenience function.

Possible API:

def measure(stmt="pass", setup="pass", timer=default_timer,
            repeat=default_repeat, number=default_number,
            verbosity=0, precision=3)

The new function would cover the latter section of the current main()
function, starting from the line "t = Timer(stmt, setup, timer)".