How to use float filter to show just two digits after decimal point?

Solution 1:

It turns to be quite simple:

My code:

{% set proc_err = nb_err|length / sum * 100 %}
({{proc_err|float}}%)

Can be changed a bit with:

{% set proc_err = nb_err|length / sum * 100 %}
({{'%0.2f' % proc_err|float}}%)

or using format:

({{'%0.2f'| format(proc_err|float)}}%)

Reference can be found here on jinja2 github issue 70

Solution 2:

You can use round to format a float to a given precision.

Extracted from the docs:

round(value, precision=0, method='common')

Round the number to a given precision. The first parameter specifies the precision (default is 0), the second the rounding method:

• common rounds either up or down
• ceil always rounds up
• floor always rounds down

If you don’t specify a method common is used.

{{ 42.55|round }}
    -> 43.0
{{ 42.55|round(1, 'floor') }}
    -> 42.5

Note that even if rounded to 0 precision, a float is returned. If you need a real integer, pipe it through int:

{{ 42.55|round|int }}
    -> 43

Solution 3:

Here is one approach ::

{{ "%.2f"|format(result) }}

Tweak it as you like :)