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...
——实际的计算机中，python 的 float 是用 64 位浮点数，其中 53 位是尾数部分，误差小得多了，但...
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). For the built-in types supportinground(...
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)) # ...
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 supportinground(), values are rounded to the closest mul...
Return the floating point valuenumberrounded tondigitsdigits after the decimal point. Ifndigitsis omitted, it defaults to zero. Delegates tonumber.__round__(ndigits). For the built-in types supportinground(), values are rounded to the closest multiple of 10 to the power minusndigits;if two...
python 3 请看文档 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 supporting round(), values are rounded ...
y *= x+2 # 相当于:y = y*(x+2) 而不是:y = y*x+2 实时效果反馈 1. python3中浮点数,如下说法错误的是: A 314E-2,表示的是:3.14 B a+=2,相当于a = a+2 C round(value) 可以进行四舍五入,并修改了value对象的值 D float("3.1415")可以转成浮点数:3.1415 答案 1=>C...
关于python3round与float的四省五入精度的问题 解决方式: print(Decimal(i["assert_value2"]).quantize(Decimal('0.00'))) 1. 以上解决方案,当i["assert_value2"]='54359.905'时,最终打印的结果会时54359.90,与四省五入值不一致: 由于python3对这个的处理是,当.905离.91与.90距离一样时,取偶数端0.90,...
2.0，再怎么round也不会变成2.00。用print %.2f"%2.0