kuroko/bench/inner_loop.py

49 lines
971 B
Python

import fasttimer as timeit
xs = [[[x for x in range(30)] for y in range(30)] for z in range(30)]
xs[29][29][29] = 42
def breaks():
for ys in xs:
for zs in ys:
for z in zs:
if z == 42:
break
else:
continue
break
else:
continue
break
else:
return None
return z
class FoundIt(Exception):
def __init__(self, needle):
self.needle = needle
def exceptions():
try:
for ys in xs:
for zs in ys:
for z in zs:
if z == 42:
raise FoundIt(z)
except FoundIt as e:
return e.needle
def _inner():
for ys in xs:
for zs in ys:
for z in zs:
if z == 42:
return z
def functions():
return _inner()
print(min(timeit.timeit(breaks,number=100) for x in range(10)),"breaks")
print(min(timeit.timeit(functions,number=100) for x in range(10)),"functions")
print(min(timeit.timeit(exceptions,number=100) for x in range(10)),"exceptions")