int函数虽然使用ROUND DOWN方式,但是是取整,得到的结果是integer。如果你的需求是要保留小数点后几位,就要使用decimal模块的接口: >>> from decimal import * >>> Decimal('1.2222').quantize(Decimal('.00'), rounding=ROUND_DOWN) Decimal('1.22') >>> Decimal('1.9999').quantize(Decimal('.00'), roundi...
print(“Rounded down to next integer:\n”, valuesRoundDown) 复制代码 首先,我们导入math模块。这样就可以使用math.ceil()和math.floor()舍入功能。然后,我们创建一个名为的列表values,其中包含多个浮点值。 为了将这些值四舍五入为整数,我们进行了三个列表推导。第一个round()针对每个列表值执行。其他两个在...
Example 1: How round() works in Python? # for integers print(round(10)) # for floating point print(round(10.7)) # even choice print(round(5.5)) Run Code Output 10 11 6 Here, round(10):rounds the integer to10 round(10.7):rounds the float10.7to nearest integer,11. round(5.5):round...
ROUND_UP 和 ROUND_DOWN:UP始终进位,DOWN始终不会进位。。 再多对比一组后一位没有超过5的数据: input:fromdecimalimport*x= Decimal('-3.14159265') + Decimal('-2.7182818285')printxprintx.quantize(Decimal('1.00000'), ROUND_HALF_EVEN)printx.quantize(Decimal('1.00000'), ROUND_HALF_DOWN)printx.quanti...
ROUND_FLOOR (towards-Infinity), ROUND_HALF_DOWN (to nearest with ties going towards zero), ROUND_HALF_EVEN (to nearest with ties going to nearest even integer), ROUND_HALF_UP (to nearest with ties going awayfromzero),orROUND_UP (awayfromzero). ...
round()函数可以接受两个参数,第一个参数是要进行截断的浮点数,第二个参数是要保留的小数位数。为了截断浮点数后面的小数,可以将小数部分与整数部分相加后取整数部分。具体实现如下: 代码语言:txt 复制 import math def truncate_float(num, decimal_places): integer_part = int(num) # 获取整数部分 decimal...
(1)s:string,字符串;(2)d:decimal integer,十进制数;(3)i:integer,用法同%d;(4)u:unsigned integer,无符号十进制数;(5)f:float,浮点数(默认保留小数点后6位);(6)F:Float,浮点数(默认保留小数点后6位);(7)e:exponent,将数字表示为科学计数法(小写e,默认保留小数点后6位);(8)E:Exponent,将数字表...
This method returns the integer part of a given decimal number. trunc(), as the name implies, shortens the number rather than rounding it up. Sometimes truncating the number is a better solution for "Round Down in Python". Syntax: # Round down number using trunc() method # I've ...
(1) s: string, 字符串; (2) d: decimal integer, 十进制数; (3) i: integer, 用法同%d; (4) u: unsigned integer, 无符号十进制数; (5) f: float, 浮点数(默认保留小数点后6位); (6) F: Float, 浮点数(默认保留小数点后6位); (7) e: exponent, 将数字表示为科学计数法(小写e, 默认...
You can use round() to round a number to the nearest integer:Python >>> round(2.3) 2 >>> round(2.7) 3 round() has some unexpected behavior when the number ends in .5:Python >>> round(2.5) 2 >>> round(3.5) 4 2.5 is rounded down to 2, and 3.5 is rounded up to 4. ...