Dinamik tiplashtirilgan

Timer([stmt='pass'][, setup='pass'][, timer=]).
Bu yerda stmt parametri sifatida bajarilish vaqti aniqlanayotgan kod yoziladi; kod parchasining bajarilish vaqtini timeit ([number=1000000]) metodi yordamida olish mumkin; number parametrida esa takrorolashlar soni ko’rsatiladi.
Namuna uchun 1 dan 10000 gacha bo’lgan sonlarning yig’indisi hisoblanaytgan bo’lsin. Ishni uch hil usul bilan tashkil qilish mumkin.
from timeit import Timer
code1 ="""\
i, j = 1, 0
while i < 10001:
j += i
i += 1
"""
tl = Timer(stmt=code1)
print("while:" , tl.timeit(number=10000))
code2 = """\
j = 0
for i in range(1, 10001):
j += i
"""
t2 = Timer(stmt=code2)
print("for:", t2.timeit(number=10000))
code3 = """\
j = sum(range(1, 10001))
"""
t3 = Timer(stmt=code3)
print("sum:", t3.timeit(number=10000))
input ()
Ushbu kod kompyuterning quvvatiga bog’liq ravishda quyidagi tahmimiy natijani beradi:

Ko’rinib turibdiki, while tsikliga nistaban for ikki marta tezroq ishlaydi; bu holda sum() ning bahosi yo’q.
Repeat([repeat=3] [, number=1000000]) metodi timeit() metodini ko’rsatilgan umarta takrorlaydi va natija beradi; number parametri timeit() metodiga uzatadi.
Quyidagi kodda namuna uchun 1 dan 10000 gacha bo’lgan sonlardan iborat satrli ro’yhat qurilmoqda.
from timeit import Timer
code1 = """\
arr1 = []
for i in range(1, 10001) :
arr1.append(str(i))
"""
t1 = Timer(stmt=code1)
print("append:", t1.repeat(repeat=3, number=2000))
code2 = """\
arr2 = [str(i) for i in range(1, 10001)]
"""
t2 = Timer(stmt=code2)
print("generator:", t2.repeat(repeat=3, number=2000))
input()
Dasturning tahminiy naytiasi:

Ko’rinib tiribdiki, generatorlar tezroq ishlar ekan.