`round()`函数是Python内置的函数之一,用于对数字进行四舍五入。它接受一个数字作为参数,并返回最接近该数字的整数。如果有两个整数与该数字的距离相等,它将返回偶数值。 2. `round()`函数的语法 `round()`函数的基本语法如下: ```python round(number[, ndigits]) ``` - number:必需,表示要进行四舍五...
Python round() 函数 Python 数字 描述 round() 方法返回浮点数x的四舍五入值。 语法 以下是 round() 方法的语法: round( x [, n] ) 参数 x -- 数值表达式。 n -- 数值表达式,表示从小数点位数。 返回值 返回浮点数x的四舍五入值。 实例 以下展示了使用 r
from decimal import Decimal, ROUND_HALF_UP def round(number, ndigits=None): """强制四舍五入""" exp = Decimal('1.{}'.format(ndigits * '0')) if ndigits else Decimal('1') return type(number)(Decimal(number).quantize(exp, ROUND_HALF_UP)) print(round(4.115, 2), type(round(4.115...
How to Round Down a Number in Python? There are various methods to round down a number in python. Let's take a look at them. Method 1: Using string format This method is applicable when you only want to show the whole number before the decimal point without altering the value. This ...
python标准库的解释及翻译round(number[, ndigits])Return the floating point value number rounded to ndigits digits after the decimal point. If ndigits is omitted, it returns the nearest integer to its input. Delegates to number.__round__(ndigits).For the built-in types...
Python 3.8 中的结果如下: round(-0.5) 0 round(0.5) 0 round(1.5) 2 round(2.5) 2 round(3.5) 4 round(4.5) 4 round(5.5) 6 round(6.5) 6 === round(number, digits) 参数: digits>0,四舍五入到指定的小数位 digits=0, 四舍五入到最接近的整数 digits<0 ,在...
Q3. How do you round a number num to three decimal places in Python? The syntax for that would look like this: round(num, 3) Q4. In Python, the round() function rounds up or down? The round() function can round the values up and down both depending on the situation. For <0.5,...
来自专栏 · Python内置函数 1 人赞同了该文章 英文文档: round(number[,ndigits])Return the floating point valuenumberrounded tondigitsdigits after the decimal point. Ifndigitsis omitted, it returns the nearest integer to its input. Delegates tonumber.__round__(ndigits).For the built-in types...
The following table demonstrates the results of rounding some negative and positive numbers in conjunction with round-to-nearest modes. The precision used to round the numbers is zero, which means the number after the decimal point affects the rounding operation. For example, for the number -2.5...
python的round函数定义为 在任意整数*10^(-ndigits) 中取最靠近number的数值，如果有两个整数距离number...