def run(generators, number, repeat=1):
print("Calculating speeds for first %d primes..." % number)
template = "\r ...%d of %d %s"
heading = """\
Generator Elapsed Speed
(sec) (primes/sec)
=============================================================="""
records = []
timer = Stopwatch() # For measuring the total elapsed time.
timer.start()
N = len(generators)
for i, generator in enumerate(generators):
name = generator.__module__ + '.' + generator.__name__
sys.stdout.write((template % (i + 1, N, name)).ljust(69))
sys.stdout.flush()
t = trial(generator, number, repeat)
records.append((number / t, t, name))
timer.stop()
sys.stdout.write("\r%-69s\n" % "Done!")
print('Total elapsed time: %.1f seconds' % timer.elapsed)
print('')
records.sort()
print(heading)
for speed, elapsed, name in records:
print("%-36s %4.2f %8.1f" % (name, elapsed, speed))
print('==============================================================\n')
def run(generators, number, repeat=1):
print ("Calculating speeds for first %d primes..." % number)
template = "\r ...%d of %d %s"
heading = """\
Generator Elapsed Speed
(sec) (primes/sec)
=============================================================="""
records = []
timer = Stopwatch() # For measuring the total elapsed time.
timer.start()
N = len(generators)
for i, generator in enumerate(generators):
name = generator.__module__ + '.' + generator.__name__
sys.stdout.write((template % (i+1, N, name)).ljust(69))
sys.stdout.flush()
t = trial(generator, number, repeat)
records.append((number/t, t, name))
timer.stop()
sys.stdout.write("\r%-69s\n" % "Done!")
print ('Total elapsed time: %.1f seconds' % timer.elapsed)
print ('')
records.sort()
print (heading)
for speed, elapsed, name in records:
print ("%-36s %4.2f %8.1f" % (name, elapsed, speed))
print ('==============================================================\n')
def trial(generator, count, repeat=1):
timer = Stopwatch()
best = YEAR100
for i in range(repeat):
it = generator()
timer.reset()
timer.start()
# Go to the count-th prime as fast as possible.
p = next(islice(it, count - 1, count))
timer.stop()
best = min(best, timer.elapsed)
return best
def trial(generator, count, repeat=1):
timer = Stopwatch()
best = YEAR100
for i in range(repeat):
it = generator()
timer.reset()
timer.start()
# Go to the count-th prime as fast as possible.
p = next(islice(it, count-1, count))
timer.stop()
best = min(best, timer.elapsed)
return best
