benchmark.py 文件源码

def main(import_):
    __builtins__.__import__ = import_
    benchmarks = (from_cache, builtin_mod,
                  source_using_bytecode, source_wo_bytecode,
                  source_writing_bytecode,
                  decimal_using_bytecode, decimal_writing_bytecode,
                  decimal_wo_bytecode,)
    seconds = 1
    seconds_plural = 's' if seconds > 1 else ''
    repeat = 3
    header = "Measuring imports/second over {} second{}, best out of {}\n"
    print(header.format(seconds, seconds_plural, repeat))
    for benchmark in benchmarks:
        print(benchmark.__doc__, "[", end=' ')
        sys.stdout.flush()
        results = []
        for result in benchmark(seconds=seconds, repeat=repeat):
            results.append(result)
            print(result, end=' ')
            sys.stdout.flush()
        assert not sys.dont_write_bytecode
        print("]", "best is", format(max(results), ',d'))