Learn how to round a number to 2 decimal places in Python for improved precision using techniques like round(), format(), and string formatting techniques.
deffloat_to_two_decimal_places(number): 1. 这里我们使用了def关键字定义了一个名为float_to_two_decimal_places的函数,并在括号内指定了一个参数number。 步骤2: 将浮点数转换为字符串 接下来,我们需要将传入的浮点数参数转换为字符串,以便后续处理。在Python中,我们可以使用str函数来实现这一步骤: AI检测代...
output is printed>>> f"{c!r}"'Color(r=123, g=32, b=255)'# Same as the default>>> f"{c!s}"'A RGB color'格式化浮点数 >>> num = 4.123956>>> f"num rounded to 2 decimal places = {num:.2f}"'num rounded to 2 decimal places = 4.12'如果不做任何指定，那么浮点数用最大精...
It is assumed that the array elements need to be rounded to a specific number of decimal places. Here is a demonstration on how to accomplish this: # sample array to work with In [21]: arr = np.random.randn(4) In [22]: arr Out[22]: array([-0.94817409, -1.61453252, 0.16566428, -...
Decimal.quantize()方法用于将Decimal数值按照给定的小数位数进行四舍五入或截断。如果希望强制保留两位小数,可以将小数位数设置为2,并选择四舍五入方式。 以下是一个示例代码: 代码语言:txt 复制 from decimal import Decimal, ROUND_HALF_UP def enforce_two_decimal_places(number): decimal_number = Decimal(str...
You can also specify text alignment using the greater than operator:>. For example, the expression{:>3.2f}would align the text three spaces to the right, as well as specify a float number with two decimal places. Conclusion In this article, I included an extensive guide of string data typ...
# Import the Decimal class and the ROUND_UP rounding mode from the decimal module from decimal import Decimal, ROUND_UP # Create a Decimal object from a string representation of a floating-point number d = Decimal("-3.14159") # Round the Decimal object to nearest integer using the ROUND_UP...
2. Using the format() Function Theformat()function is another versatile way to format numbers with commas and two decimal places: number = 1234567.8910 formatted_number = "{:,.2f}".format(number) print(formatted_number) Similar to f-strings, the format specifier:,adds commas, and.2fensures...
2. 3. 这里{:.1%}表示输出为小数点后一位的百分比格式。 类图示例 在程序中,对象和类的设计是十分重要的。下面是有关数字格式化的一个简单类图示例,展示了不同的格式化策略。 NumberFormatter+format(float number, str format)+formatAsPercentage(float number, int decimalPlaces)DecimalFormatter+formatToDecimal...
1. Python数据类型(6个) 1.1 数值型(number) 1.2 字符型(string) 字符串常用方法 转义字符 可迭代性 f-string 1.3 列表(list) 1.4 字典(dictionary) 1.5 集合(set) 1.6 元组(tuple) 1.7 内存视图Memoryview 2. 动态引用、强类型 3. 二元运算符和比较运算 4. 标量类型 5. 三元表达式 ...