ree

test_speed.py

@@ -3,14 +3,14 @@ import time
 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
-b = 2
-
-c = 0.1
-d = 2.1
+a = 1.1
+b = 2.5
 
+# 重新创建 decimal 对象
 a_start_time = time.time()
 for x in range(0, times, 1):
     Da = D(str(a))
@@ -18,6 +18,7 @@ for x in range(0, times, 1):
     Dc = Da * Db
 a_stop_time = time.time()
 
+# 单次创建 decimal 对象
 b_start_time = time.time()
 Da = D(str(a))
 Db = D(str(b))
@@ -25,18 +26,12 @@ for x in range(0, times, 1):
     Dc = Da * Db
 b_stop_time = time.time()
 
+# 直接计算
 c_start_time = time.time()
 for x in range(0, times, 1):
     Tc = a * b
 c_stop_time = time.time()
 
-def test(times, a, b):
-    t = times
-    s = time.time()
-    while t:
-        
-        t -= 1
-    e = time.time()
-    return e - s
-
-
+print('重新创建 decimal 对象所需时间：', a_stop_time - a_start_time)
+print('单次创建 decimal 对象所需时间：', b_stop_time - b_start_time)
+print('直接计算所需时间: ', c_stop_time - c_start_time)