jinja2 has tons of filters for strings, lists, etc that can be used to make the process of, um well, filtering simpler.

To apply a filter you can use pipe symbol (|). In order to lower case`/`upper case a string:

{{"SOMETHING"|lower}}
 {{"sOmThing"|upper}}

Or let's say getting the max number from a list:

{{ [1, 2, 3]|max }}

The filters are endless, see below for more:

http://jinja.pocoo.org/docs/2.10/templates/#filters

#python #jinja2 #template #filter #uppercase #lowercase #max

The table provides a list of useful aggregation functions available in NumPy

#numpy #aggregation #sum #prod #mean #std #min #max #any #all