下面是一个完整的示例,将字符串转换为两位小数数字: defconvert_to_two_decimal_places(num_str):num_float=float(num_str)formatted_num="{:.2f}".format(num_float)returnfloat(formatted_num)num_str="3.14159"result=convert_to_two_decimal_places(num_str)print(result)# 输出:3.14 1. 2. 3. 4. 5...
print("Pi to 2 decimal places is {:.2f}".format(pi)) 输出: Pi to 2 decimal places is 3.14 print("Square root of 2 is {:.2e}".format(math.sqrt(2))) 输出: Square root of 2 is 1.41e+00 print("Binary representation of 10 is {:b}".format(10)) 输出: Binary representation of...
1. 2. 3. 全局保持两位数 有时候我们希望在整个程序中都保持数字的格式为两位小数。这时可以自定义一个函数或者类来实现全局保持两位数的功能。 defkeep_two_decimal_places(num):return"{:.2f}".format(num)# 使用示例num=3.1415926formatted_num=keep_two_decimal_places(num)print(formatted_num)# 输出 3.14...
>>> 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度 >>> print(f'{num}')4.123956 格式化百分比数 >>> total = 87>>> true_pos = 34>>> perc = true_pos / total>>> perc0.390...
print("Original Number: ", x) # Format the value of 'x' to two decimal places and include a sign (positive or negative) in the result. print("Formatted Number with sign: "+"{:+.2f}".format(x)) # Print the original value of 'y' with a label. print("Original Number: ", y)...
percentage = f"{value:.2f}%" # format the value to a string with 2 decimal places and append a "%" sign print(percentage) # output: 50.00% 在Python中，我们可以使用多种方法来输出百分比。最常用的方法是使用print()函数和格式化字符串。从Python 3.6开始，推荐使用f-strings(格式化字符串字面...
序列化 DecimalField 关于DecimalField(max_digits, decimal_places, coerce_to_string=None, max_value=None, min_value=None)相关参数 max_digits 数字中允许的最大位数。 它必须是 None 或大于等于 decimal_places 的整数。 decimal_places 以数字存储的小数位数。
decimal_places 以数字存储的小数位数。 max_value 验证所提供的数字不大于这个值。 min_value 验证所提供的数字不小于这个值。 localize 设置为 True 以便基于当前区域启用输入和输出本地化。这也将强制 coerce_to_string 为 True。默认为 False。请注意,如果在设置文件中设置了 USE_L10N = True,则会启用数据格...
Integer numbers are whole numbers with no decimal places. They can be positive or negative numbers. For example, 0, 1, 2, 3, -1, -2, and -3 are all integers. Usually, you’ll use positive integer numbers to count things.In Python, the integer data type is represented by the int ...
Insert the price inside the placeholder, the price should be in fixed point, two-decimal format: txt ="For only {price:.2f} dollars!" print(txt.format(price =49)) Try it Yourself » Definition and Usage Theformat()method formats the specified value(s) and insert them inside the string...