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...
下面是一个完整的示例,演示了如何将字符串转换为浮点数并保留2位小数。 defconvert_to_float_with_2_decimal_places(s):num=float(s)formatted_num="{:.2f}".format(num)returnformatted_num# 测试s="3.14159"result=convert_to_float_with_2_decimal_places(s)print(result) 1. 2. 3. 4. 5. 6. 7....
>>> ip_address = "127.0.0.1"# pylint complains if we use the methods below>>> "http://%s:8000/" % ip_address'http://127.0.0.1:8000/'>>> "http://{}:8000/".format(ip_address)'http://127.0.0.1:8000/'# Replace it with a f-string>>> f"http://{ip_address}:8000...
coerce_to_string 如果用于表示应返回字符串值,则设置为 True; 如果应返回 Decimal 对象,则设置为 False。 默认与 COERCE_DECIMAL_TO_STRING 设置中的键值相同,除非重写,否则将为 True。 如果序列化器返回 Decimal 对象,则最终输出格式将由渲染器确定。 请注意,设置 localize 会将值强制为 True。 rounding 设置量...
How to use string formatting methods to format a float value to two decimal places? Using the round function. Using theDecimalobject and thequantizemethod. How to round each item in a list of floats to 2 decimal places? With that, we come to the end of this comprehensive guide. I hope...
In Python 3 however, float(-3.65) returns -3.6499999999999999 which loses its precision. I want to print the list of floats, [-3.6499999999999999, 9.1699999999999999, 1.0] with 2 decimal points only. Doing something along the lines of '%.1f' % round(n, 1) would return a string. How can...
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...
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...
This is very inconvenient since standard string formatters for float require that you specify number of decimal places rather than significant places. So if you have a number that could have as many as 15 decimal places you need to format as Decimal("%.15f" % my_float), which will give ...
Example 1: Formatting with two decimal places value=123.45678formatted_value="{:.2f}".format(value)print(formatted_value)print(type(formatted_value)) Output 123.46<class'str'> The output returns a string. To convert the output to afloat, use thefloat() function. ...