jinja2 load template from string: TypeError: no loader for this environment specified

Question

I'm using Jinja2 in Flask. I want to render a template from a string. I tried the following 2 methods:

 rtemplate = jinja2.Environment().from_string(myString)  data = rtemplate.render(**data) 

and

 rtemplate = jinja2.Template(myString)  data = rtemplate.render(**data) 

However both methods return:

TypeError: no loader for this environment specified 

I checked the manual and this url: https://gist.github.com/wrunk/1317933

However nowhere is specified to select a loader when using a string.

Answer 1

You can provide loader in Environment from that list

from jinja2 import Environment, BaseLoader  rtemplate = Environment(loader=BaseLoader).from_string(myString) data = rtemplate.render(**data) 

Edit: The problem was with myString, it has {% include 'test.html' %} and Jinja2 has no idea where to get template from.

UPDATE

As @iver56 kindly noted, it's better to:

rtemplate = Environment(loader=BaseLoader()).from_string(myString)