How does the `stringformat` filter convert a floating-point number to a string with thousand separators?

In the template development of AnQi CMS,stringformatA filter is a very practical tool that allows us to flexibly format various data types, especially numbers and strings, to meet the needs of page display.When dealing with floating-point numbers, we often encounter the need to convert them into a specific string format, such as retaining decimal places.However, if large numbers can be accompanied by a thousand separator (for example: 1,234,567.89), it can not only significantly improve the readability of numbers, but also make the data presentation more professional.So, how can we utilize in AnQi CMSstringformatHow can the filter achieve this goal?

stringformatBasic capability: Formatting floating-point numbers

First, let's reviewstringformatBasic function of the filter. This filter is similar to that in many programming languagesprintfor built-in in Go languagefmt.SprintfA function. It takes a formatted string as an argument to control the format of variable output.For example, we would typically use it like this to round a floating-point number to two decimal places:

{{ 3.141592653|stringformat:"%.2f" }}

The output of this code will be3.14It successfully truncates floating-point numbers and retains two decimal places. Similarly, if you need to output an integer, you can use%d:

{{ 888|stringformat:"Test: %d" }}

The output will beTest: 888.stringformatExcellent in controlling the precision, width, and embedding of strings, a powerful helper for data display in templates.

Core issue: How to implement thousand separators?

However, when our goal is to convert a floating-point number to a string with thousand separators, for example, to convert1234567.89Formatted as `1,234,567.8