38 lines
815 B
Python
38 lines
815 B
Python
import time
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from decimal import Decimal as D
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times = 5000000
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# 尽量不要超过 5000000 否则整体执行时间>10s
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# 5000000
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a = 1.1
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b = 2.5
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# 重新创建 decimal 对象
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a_start_time = time.time()
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for x in range(0, times, 1):
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Da = D(str(a))
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Db = D(str(b))
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Dc = Da * Db
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a_stop_time = time.time()
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# 单次创建 decimal 对象
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b_start_time = time.time()
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Da = D(str(a))
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Db = D(str(b))
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for x in range(0, times, 1):
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Dc = Da * Db
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b_stop_time = time.time()
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# 直接计算
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c_start_time = time.time()
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for x in range(0, times, 1):
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Tc = a * b
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c_stop_time = time.time()
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print('重新创建 decimal 对象所需时间：', a_stop_time - a_start_time)
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print('单次创建 decimal 对象所需时间：', b_stop_time - b_start_time)
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print('直接计算所需时间: ', c_stop_time - c_start_time)
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