Counts the # of ALL-CAPS words and blocks if > than a certain percent.

All-caps Django comments filter

# in toolbox/text.py:
def count_capital_words(str):
    """
    Counts the number of capital words in a string and returns a % of ALL-CAPS WORDS. Issues with this:
    "words" made up of non-letters get counted as all-caps (including emoticons: :(, :), 8===D, etc). Also,
    CoMmEnTs lIkE tHiZ don't get counted. Perhaps a better solution would be to to use a regex to count all occurrences of
    [A-Z]. This works decently though.
    """
    count = 0
    words = str.split()
    length = len(words)
    for word in words:
        if word == word.upper() and word != 'I':
            count+=1
    return (float(count) / length) * 100

# in comments/forms.py:
from toolbox.text import count_capital_words
from django.conf import settings
#...
    def clean_comment(self):
        #...
        if getattr(settings, 'COMMENT_CAPS_BLOCKER', False) and count_capital_words(comment) > getattr(settings, 'COMMENT_CAPS_THRESHOLD', 70):
            raise forms.ValidationError("Sorry, comments WRITTEN IN ALL CAPS will not be approved. Please re-write your comment (try hitting the caps lock key) and try again.")
        return comment

# in settings.py:
COMMENT_CAPS_BLOCKER = True
COMMENT_CAPS_THRESHOLD = 70