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...
You can use the {:.2f} format formatting to display a number with two decimal places. Update code: import math result = math.floor(1.4) formatted_result = "{:.2f}".format(result) print(formatted_result) #1.00 Share Follow answered Nov 2, 2023 at 14:47 XMehdi01 1 Add a comment...
x = 123.456 print(f"Formatted number with 2 decimal places: {x:.2f}") Output: Formatted number with 2 decimal places: 123.46 这里,{x:.2f}表示输出浮点数保留2位小数。 使用locale模块 Python还提供了locale模块来格式化数字,以正确呈现与系统或用户语言相关的数字格式。 import locale locale.setlocal...
Related to this, the repr() of a floating-point number x now returns a result based on the shortest decimal string that’s guaranteed to round back to x under correct rounding (with round-half-to-even rounding mode). Previously it gave a string based on rounding x to 17 decimal digits....
1.1 数值型(number) 例子: a, b, c, d = 20, 5.5, True, 4+3j print(a, b, c, d) # 20 5.5 True (4+3j) print(type(a), type(b), type(c), type(d)) # <class 'int'> <class 'float'> <class 'bool'> <class 'complex'> Python也可以这样赋值: ...
decimal_places=2, default=0) order = models.ForeignKey( Order, on_delete=models.CASCADE, related_name='items') 在这里,我们还定义了一个Meta类,以便我们可以为模型设置一些元数据。在这种情况下,我们将verbose_name_plural设置为Order items,以便在 Django 管理界面中正确拼写。然后,我们定义了product_id,na...
In this article, you will learn how to format a floating-point value and generate a float number with two decimal places. Example: In the following code, we are calculating the area of a circle. 1 2 3 4 5 6 7 8 import math radius = 5 area = math.pi*radius*radius print("Are...
print("Each friend must pay${:0.2f}for dinner.".format(cost_per_friend)) Our.format()statement uses the following syntax to create a decimal representation of a number that is rounded to two places: {:0.2f} The colon (:) tells our code we want to format a value. The zero is used...
name = "Bob" print("Hello, %s!" % name) This will give us: Hello, Bob! %d Format Specifier On the other hand, the %d format specifier is a placeholder for a decimal integer. The %d specifier requires an integer or a number that can be losslessly converted to an integer, like ...
quantize(Decimal('1.'), rounding=ROUND_UP) Decimal('8') 如上所示,getcontext() 函数访问当前上下文并允许更改设置。 这种方法满足大多数应用程序的需求。 对于更高级的工作,使用 Context() 构造函数创建备用上下文可能很有用。 要使用备用活动,请使用 setcontext() 函数。 根据标准,decimal 模块提供了两个...