class Lexer()
    def get_names():
        return re.findall('...')
    def get_numbers():
        return re.findall('...')
    def get_dates():
        return re.findall('...')
    ...

lex = Lexer()

names = lex.get_names()
numbers = lex.get_numbers()
dates = lex.get_dates()
...