I have this template:

% template.tmpl file:
% set result = fractions.Fraction(a*d + b*c, b*d) %}
The solution of ${{a}}/{{b}} + {{c}}/{{d}}$ is ${{a * d + b*c}}/{{b*d}} = {{result.numerator}}/{{result.denominator}}$ 

which I invoke by

from jinja2 import Template
import fractions

with open("c.jinja") as f:
    t = Template(f.read())
    a = 2
    b = 3
    c = 4
    d = 5
    print(t.render(a = a, b = b, c=c, d=d))

I get

jinja2.exceptions.UndefinedError: 'fractions' is undefined

but I want

The solution of $2/3 + 4/5$ is $22/15=22/15$.

Is this possible to achieve that?