Is there a direct approach to format numbers in jinja2?

问题

I need to format decimal numbers in jinja2.

When I need to format dates, I call the strftime() method in my template, like this:

{{ somedate.strftime('%Y-%m-%d') }}

I wonder if there is a similar approach to do this over numbers.

Thanks in advance!

回答1:

You can do it simply like this, the Python way:

{{ '%04d' % 42 }}

{{ 'Number: %d' % variable }}

Or using that method:

{{ '%d' | format(42) }}

I personally prefer the first one since it's exactly like in Python.

回答2:

I want to highlight Joran Beasley's comment because I find it the best solution:

Original comment:

can you not do {{ "{0:0.2f}".format(my_num) }} or {{ my_num|format "%0.2f" }} (wsgiarea.pocoo.org/jinja/docs/filters.html#format) – Joran Beasley Oct 1 '12 at 21:07`

Indeed, {{ '{0:0.2f}'.format(100) }} works fantastically.

This is just python string formatting. Given the first argument, {0}, format it with the following format 0.2f.

回答3:

You could use round it will let you round the number to a given precision usage is:

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

The first parameter specifies the precision (default is 0), the second the rounding method from which you can choose 3:

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

回答4:

Formatting and padding works well in the same way.

{{ "{0}".format(size).rjust(15) }}

来源：https://stackoverflow.com/questions/12681036/is-there-a-direct-approach-to-format-numbers-in-jinja2

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python

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jinja2