[Fixed]-Django – NoReverseMatch form

Notice that it is attempting to use choice in the url, instead of choices, as you have it set to do in your urls.py.

Try correcting your syntax and see if it works:

url(r'^generator/$', SelectView.as_view(),
    name="select")),
url(r'^choices/(?P<types>\w+)/$', ChoicesView.as_view(),
    name="choice")),