DR_Team/Difficult-Rocket
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沈瑗杰 2021-01-16 23:31:30 +08:00
parent f7d2a06371
commit fe318ffe5e
1 changed files with 11 additions and 16 deletions
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27
test_speed.py
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@ -3,14 +3,14 @@ import time
from decimal import Decimal as D from decimal import Decimal as D
times = 1000000 times = 5000000
# 尽量不要超过 5000000 否则整体执行时间>10s
# 5000000
a = 1 a = 1.1
b = 2 b = 2.5
c = 0.1
d = 2.1
# 重新创建 decimal 对象
a_start_time = time.time() a_start_time = time.time()
for x in range(0, times, 1): for x in range(0, times, 1):
Da = D(str(a)) Da = D(str(a))
@ -18,6 +18,7 @@ for x in range(0, times, 1):
Dc = Da * Db Dc = Da * Db
a_stop_time = time.time() a_stop_time = time.time()
# 单次创建 decimal 对象
b_start_time = time.time() b_start_time = time.time()
Da = D(str(a)) Da = D(str(a))
Db = D(str(b)) Db = D(str(b))
@ -25,18 +26,12 @@ for x in range(0, times, 1):
Dc = Da * Db Dc = Da * Db
b_stop_time = time.time() b_stop_time = time.time()
# 直接计算
c_start_time = time.time() c_start_time = time.time()
for x in range(0, times, 1): for x in range(0, times, 1):
Tc = a * b Tc = a * b
c_stop_time = time.time() c_stop_time = time.time()
def test(times, a, b): print('重新创建 decimal 对象所需时间：', a_stop_time - a_start_time)
t = times print('单次创建 decimal 对象所需时间：', b_stop_time - b_start_time)
s = time.time() print('直接计算所需时间: ', c_stop_time - c_start_time)
while t:
t -= 1
e = time.time()
return e - s