Need to convert a string to int in a django template

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you can coerce a str to an int using the add filter 

{% for item in numItems|add:"0" %}

https://docs.djangoproject.com/en/dev/ref/templates/builtins/#add

to coerce int to str just use slugify

{{ some_int|slugify }}

EDIT: that said, I agree with the others that normally you should do this in the view – use these tricks only when the alternatives are much worse.

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