Note:The behavior of round() for floats can be surprising: for example, round(2.675, 2) gives 2.67 instead of the expected 2.68. This is not a bug: it’s a result of the fact that most decimal fractions can’t be represented exactly as a float. 若需了解更多信息可以访问:Floating Point...
如果你想要使Python内置的round函数的行为与decimal模块中的某个舍入模式相对应,可以这样对应: Python 内置round函数的默认行为(ROUND_HALF_TO_EVEN)对应于decimal模块中的ROUND_HALF_EVEN。 如果你想要 Python 的round函数行为与decimal模块中的ROUND_HALF_UP相对应,你需要手动实现这种舍入逻辑,因为round函数本身不提供...
Python has an in-built round() method to round off any number.It takes two parameters as input - num - The number to be rounded. decimal_places - The number of digits to be rounded off (default being 0). Let's try rounding off a number for different decimal places - # Round down...
round(5.5):rounds the float5.5to6. Example 2: Round a number to the given number of decimal places print(round(2.665,2))print(round(2.675,2)) Run Code Output 2.67 2.67 When the decimal2.675is converted to a binary floating-point number, it's again replaced with a binary approximation, ...
print(round(3.447444, 2)) >>3.45 from decimal import Decimal print(Decimal('0.3') + Decimal('0.9')) >>1.2 import math #向上取
Python Decimal ROUND_HALF_UP 实现指南 作为一名经验丰富的开发者,我将向您介绍如何在Python中实现decimal ROUND_HALF_UP,即四舍五入的算法。这种算法在金融和科学计算中非常常见,因为它可以提供更精确的数值表示。 1. 准备工作 在开始之前,我们需要确保Python环境中已经安装了decimal模块。decimal模块是Python标准库的...
Learn how to round a number to 2 decimal places in Python for improved precision using techniques like round(), format(), and string formatting techniques.
Decimal还可以用来限定数据的总位数。 round是截断(直接舍弃其余位)还是四舍五入原则,和版本有关系。 举例: # 默认对十分位四舍五入,也就是四舍五入成整数print(round(1.23))# 1print(round(1.27))# 1# 小数出现.5,返回离他们最近的偶数print(round(1.5))# 2print(round(2.5))# 2print(round(3.5))#...
Python’s built-in round() function uses the rounding half to even strategy, which rounds numbers like 2.5 to 2 and 3.5 to 4. This method helps minimize rounding bias in datasets. To round numbers to specific decimal places, you can use the round() function with a second argument ...
SIMPLY USE " round(_,x) " AND PUT YOUR VALUE AT ' x ' HERE ' x ' IS THE NUMBER OF DIGITS AFTER DECIMAL POINT YOU WANT TO ROUND OFF. EX: no = 5.3425647 print(no) CODE: round (no,3) OUTPUT: 5.342 17th Sep 2021, 6:00 AM ...