# It imports all the names from the decimal module into the current namespace.fromdecimalimport*# It sets the precision of the decimal module to 8.getcontext().prec =8# Dividing 1 by 6 and storing the result in the variable `decimal_`.decimal_ = Decimal(1)/Decimal(6)print('精确到8...
from decimal import * # It sets the precision of the decimal module to 8.getcontext().prec = 8 # Dividing 1 by 6 and storing the result in the variable `decimal_`. decimal_ = Decimal(1)/Decimal(6) print('精确到8位小数后的结果是:{0}'.format(decimal_)) # 精确到8位小数后的结果...
b = decimal.Decimal('1.234') # A PriorityQueue will return values sorted by precision, no matter # what order the threads finish. q = PriorityQueue() threads = [ Multiplier(a, b, i, q) for i in range(1, 6) ] for t in threads: t.start() for t in threads: t.join() for i ...
for rounding_mode in ROUNDING_MODES: print('{0:10}'.format(rounding_mode.partition('_')[-1]), end=' ') for precision in [1, 2, 3]: context.prec = precision context.rounding = getattr(decimal, rounding_mode) value = decimal.Decimal(1) / decimal.Decimal(8) print('{0:^8}'.form...
/usr/bin/python from decimal import Decimal x = 1 / 3 print(type(x)) print(x) print("---") y = Decimal(1) / Decimal(3) print(type(y)) print(y) The example compares the precision of two floating point types in Python. $ ./defprec.py <class 'float...
DECIMALfloatvalueintprecisionstringrounding_modeINPUTfloatinput_numberOUTPUTfloatrounded_resultusesgenerates 总结 Python 的decimal模块为我们提供了一种简单而高效的方式来处理需要高精度的数值计算。在实际应用中,通过简单的几行代码,我们就能够实现复杂的数学运算,如对数字进行百位取整。掌握这个模块不仅可以帮助我们更好...
precision字段的值已经达到了40,超过的最大精度,因此,需要重新计算精度,计算后的结果是,将小数的精度减少了2位为10,精度使用最大精度值38。在hive2.3.x中,算术运算的精度的计算公式如下: 至此...负号 -的方式,将负号 - 加到sum前即可。 2)降低建表语句中decimal类型的精度字段的值,根据上面计算精度的表算出...
4.局部上下文使用 Python 2.5 或以后版本时,可以使用 with 语句对一个代码块应用上下文。 importdecimalwithdecimal.localcontext()asc: c.prec =2print'Local precision:', c.precprint'3.14 / 3 =', (decimal.Decimal('3.14') /3)printprint'Default precision:', decimal.getcontext().precprint'3.14 / ...
Controllling Precision for single operation In the last program, there were 25 decimal places in the answer now. But what if we only wanted up to three places of decimal values? This can be controlled as well. Here, we will control the precision of the answer which will not reflect in ...
prec = 30 # 使用Decimal进行高精度计算 x_decimal = [Decimal(str(val)) for val in x] y_decimal = [Decimal(str(math.sin(val))) for val in x_decimal] # 绘制高精度正弦函数图形 plt.plot(x_decimal, y_decimal, label='sin(x) (High Precision)') plt.title('High Precision Sin Function...