3. Round to Multiples Sometimes you need to round to the nearest 5, 10, or any other number rather than decimal places: # Round prices to nearest 5 cents for a pricing strategy prices = np.array([9.97, 24.32, 4
getcontext().rounding = getattr(decimal, 'ROUND_CEILING') # It sets the precision of the decimal module to 10. getcontext().prec = 10 # Converting the integer 9 to a string and then converting it to a Decimal object. decimal_ = Decimal(1) / Decimal(str(9)) print('向上取整保留10位...
This example shows round with different numbers. Without precision, it rounds to nearest integer. Note the bankers rounding for 0.5 cases. With precision argument, it rounds to specified decimal places. The function returns a float even when rounding to whole numbers with precision specified. ...
这样,可以方便地在不同的输入下调用。 defround_to_two_decimal_places(num):""" 将给定数字四舍五入到两位小数。 :param num: 需要四舍五入的数字 :return: 四舍五入后的数字 """returnround(num,2)# 示例调用result=round_to_two_decimal_places(2.71828)print(result)# 输出结果为 2.72 1. 2. 3....
1到... 数学函数 数学函数如下表所示:函数 功能 ABS 计算绝对值。CEIL 计算向上取整值。FLOOR 计算向下取整值。POW 计算幂值。ROUND 计算四舍五入到指定小数点的值。SQRT 计算平方根。ABS 函数说明 计算number的绝对值。参数说明 number:必填,数值类型。... 计费概述 月消费金额=计费单价(精确到小数点后...
round(number[,ndigits]) 1. number:要四舍五入的数字。 ndigits(可选):四舍五入到的小数位数。 2.2 代码示例 以下是一个使用round函数的示例: # 进行四舍五入num=3.14159rounded_num=round(num,2)print(f"{num}rounded to two decimal places is{rounded_num}.") ...
In this tutorial, you’ll learn how to:Create integers and floating-point numbers Round numbers to a given number of decimal places Format and display numbers in stringsLet’s get started!Note: This tutorial is adapted from the chapter “Numbers and Math” in Python Basics: A Practical ...
decimal类型，即小数类型，则是Python的标准库之一decimal提供的对象类型，也是内置的。了解decimal类型的...
The difference becomes significant if the results are rounded to the nearest cent:>>> >>> from decimal import * >>> round(Decimal('0.70') * Decimal('1.05'), 2) Decimal('0.74') >>> round(.70 * 1.05, 2) 0.73 The Decimal result keeps a trailing zero, automatically inferring four ...
places =int(input("How many decimal places to display? (0-10): "))if0<= places <=10:breakelse:print("Please enter a number between 0 and 10.")exceptValueError:print("Invalid input! Please enter an integer.") Tresult =f"{result:.{places}f}"print(f"{num1}{sign}{num2}={Tresul...