Regex to match letters, numbers and some specific characters?

Question

I'm trying to match a Django URL bit that can contain:

_, %, &, +, 0-9, a-z, A-Z, (space)

How can I do it so it is picked up by Django's URL matcher, in form of a parameter?

(r'^(?P<chararg>\w+)/IT_NEEDS_TO_BE_HERE/(?P<intarg>\d+)', 'dest')

Answer 1

I am not so sure about % char, but regex would be [_%&+0-9a-zA-Z ]+

Answer 2

As \w means [a-zA-Z0-9_], you could use :

[%&+ \w]+