defround_to_two_decimal_places(number):return'{:.2f}'.format(number) 1. 2. 以上代码定义了一个名为round_to_two_decimal_places的函数,它接受一个数字作为输入,并返回保留两位有效数字并自动补0的结果。 示例 假设我们有一个数值列表[0.123, 1.234, 12.345, 123.456, 1234.567],我们希望将每个数值保留两...
这样,可以方便地在不同的输入下调用。 defround_to_two_decimal_places(num):""" 将给定数字四舍五入到两位小数。 :param num: 需要四舍五入的数字 :return: 四舍五入后的数字 """returnround(num,2)# 示例调用result=round_to_two_decimal_places(2.71828)print(result)# 输出结果为 2.72 1. 2. 3....
Learn how to round a number to 2 decimal places in Python for improved precision using techniques like round(), format(), and string formatting techniques.
getcontext().rounding = getattr(decimal, 'ROUND_FLOOR') # It sets the precision of the decimal module to 10. getcontext().prec = 10 # Converting the integer 9 to a string and then converting it to a Decimal object. decimal_ = Decimal(1) / Decimal(str(9)) print('向下取整保留10位...
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):rounds the float5.5to6. Example 2: Round a number to the given number of decimal places ...
在Python中,我们可以使用内置的round()函数来截断浮点数后面的小数。不进行舍入的方法是将小数部分与整数部分相加后取整数部分,可以使用math模块中的floor()函数或者int()函数来实现...
Discover three techniques to round up numbers in Python: using Python round up methods like math.ceil() from the math module, the decimal module, and NumPy.
numpy.round(arr, decimals=0, out=None) NumPy round() function parameters required Here, NameDescription arrThis is the input array in Python that we want to round, decimalsAn integer that determines the number of decimal places to which the values are rounded. The default value is 0. ...
_floor__(self):"""Finds the greatest Integral <= self."""raiseNotImplementedError@abstractmethoddef__ceil__(self):"""Finds the least Integral >= self."""raiseNotImplementedError@abstractmethoddef__round__(self, ndigits:Integral=None):"""Rounds self to ndigits decimal places, defaulting to 0...
通常使用 decimal 的方式是先导入该模块,通过 getcontext() 查看当前上下文,并在必要时为精度、舍入或启用的陷阱设置新值: >>> from decimal import * >>> getcontext() Context(prec=28, rounding=ROUND_HALF_EVEN, Emin=-999999, Emax=999999, capitals=1, clamp=0, flags=[], traps=[InvalidOperation,...