在Python中,保留两位小数可以使用多种方法,其中比较常用的有格式化字符串和四舍五入。格式化字符串可以通过字符串格式化和format函数来实现。下面是一个使用字符串格式化的例子:```pythonx = 3.1415926print("保留两位小数:{:.2f}".format(x))```输出:保留两位小数:3.14在这个例子中,`{:.2f}`表示要保...
Decimal --> |input| Format Decimal --> |output| Round Decimal --> |output| String 流程图 最后,让我们用mermaid语法中的flowchart TD来整理一下保留n位小数的流程: num=3.1415926, n=2{:.{}f}3.14%.2fStartInputNumberFormatOutputPrintOutputRoundOutputStringOutputEnd 通过以上介绍,相信读者对Python中pri...
Decimal-_work-_exp-_int+__abs__()+__add__(other)+__sub__(other)+__mul__(other)+__truediv__(other)+__floordiv__(other)+__mod__(other) 在上面的类图中,我们展示了Decimal类的一些常用方法,如__abs__()、__add__()、__sub__()等,这些方法用于在Decimal对象上进行相应的运算操作。
from decimal import Decimal, ROUND_HALF_UP, getcontextx = 1.045getcontext().rounding = ROUND_HALF_UPprint(round(Decimal(str(x)), 2)) 另一种写法是通过 Decimal 的 quantize 方法,指定保留位数和舍入规则,效果是一样的。 from decimal import Decimalx = 1.045print(Decimal(str(x)).quantize(Decimal...
How To Print a Number without Decimal in Python? Using the int() Function Using the math.trunc() function Using the round() function Using the split() function along with the int() function Conclusion. Python provides a float data type that allows the storage of floating-point numbers. The...
使用Decimal模块 使用numpy库 1. 字符串格式 方法1:使用f-strings (Python 3.6及以上) value=3.141592653589793 formatted_value=f"{value:.2f}" print(formatted_value) # 输出: 3.14 方法2:使用str.format() value=3.141592653589793 formatted_value="{:.2f}".format(value) ...
【未来虫教育】Python 数学相关模块 1. 简介 我们来看一下 Python 中数学相关模块,如下所示: 本文具体介绍一下相对比较常用的模块:math、decimal 和 random。 2. math 模块 先来看一下 math 模块中包含内容,如下所示: >>> import math>>> dir(math)['__doc__', '__loader__', '__name__', '_...
Therefore, I could count the number of decimal digits and use that in the format function. In doing so, I have a related problem... is there any way to count the decimal digits of a decimal number without using Decimal? python formatting decimal digits scientific-notation Share Improve...
Notably, this converter: * Strips all ignorable trailing zeroes and decimal points from this number (e.g., ``3`` rather than either ``3.`` or ``3.0``). * Rounds to the passed precision for perceptual uniformity. Parameters --- real : float Arbitrary floating-point number to be pret...
I have learnt numbers' output can be controlled well with f-string, is there any such magic with lists? I have a list of floats and want to print just 2 decimal point of each number. an example of what I want although it is not a pretty solution (or is it the...