how about we build a dict that having good readability like @bebef1987 suggested and reverse that so we don't need to look it up everytime we want a special character?
for example:

test = {'a': ['á', 'à', 'â', 'ä', 'å', 'ã', 'ā', 'æ'], 'c': ['ç', 'ć', 'č']}
test2 = {}
# constructor
def launch(self):
    for test_key, test_value in test.iteritems():
        for v in test_value:
            self.test2[v] = test_key