python里面ro..round如果精确到整数的话就是四舍五入,但是保留几位小数时十分古怪,满足四舍六入,但是五的情况你根本无法预测,我用程序统计过,到底是否进一,几乎毫无规律
round() Return Value Theround()function returns the nearest integer to the given number ifndigitsis not provided number rounded off to thendigitsdigits ifndigitsis provided Example 1: How round() works in Python? # for integers print(round(10)) # for floating point print(round(10.7)) # ...
# 1.函数:round # 2.功能:用于返回数值经四舍五入规则处理后的值 # 3.语法:round(number[, ndigits=None]) # 4.参数: # 4-1、number:必须参数,表示需要进行四舍五入规则操作的数值 # 4-2、ndigits:可选参数,表示小数点后保留的位数,可为任意整数值(正数、零或负数) # 4-2-1、若不提供ndigits...
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中向下取整(round向下取整) 大家好,又见面了,我是你们的朋友全栈君。 from numpy\core_multiarray_umath.py np.floor() 代码语言:javascript 代码运行次数:0 运行 deffloor(x,*args,**kwargs):# real signature unknown;NOTE:unreliably restored from __doc__""" floor(x, /, out=None, *, ...
Python3.6内置函数——round 英文文档 (number[,ndigits]) Returnnumberrounded tondigitsprecision after the decimalpoint. Ifndigitsis omitted or is , it returns thenearest integer to its input. round() round(number[, ndigits])。 1、round函数用于对浮点数进行四舍五入求值,具体保留几位小数,以传入...
Python内置函数(55)——round 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)....
而第3条规则是:当需要修约的数值恰好位于两个数中间时(即被修约的数字是5开头),Python的round()函数采用的这种策略叫做银行家舍入法(Banker's Rounding),也称为 “四舍六入五取偶” 法(也称为:“四舍六入五留双”、“偶数舍入法”),即在这种情况下,会舍入到最近的偶数。
Pythonround()Function ❮ Built-in Functions ExampleGet your own Python Server Round a number to only two decimals: x =round(5.76543,2) print(x) Try it Yourself » Definition and Usage Theround()function returns a floating point number that is a rounded version of the specified number, ...
Round off to nearest integer : 3 从上面的输出结果可以看出，在没有提供ndigits参数时，round函数将会把3.1415四舍五入至最接近的整数，即3。而在提供ndigits参数时，round函数则会把3.1415四舍五入至2位小数，即3.14。例2：#!/usr/bin/python3 b= 3.75 #Round off to 2 decimal places print(...