How can I modify/merge Jinja2 dictionaries?

Question

I have a Jinja2 dictionary and I want a single expression that modifies it - either by changing its content, or merging with another dictionary.

>>>         


        

Answer 1

I added a filter to merge dictionaries, namely:

>>> def add_to_dict(x,y): return dict(x, **y)
>>> e.filters['add_to_dict'] = add_to_dict
>>> e.from_string("{{ x|add_to_dict({4:5}) }}").render({'x':{1:2,2:3}})
u'{1: 2, 2: 3, 4: 5}'