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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def by_re_lookup(self, style_key, style_value, re_flags=0):
 """Return a processor for a "re_lookup" style value. Parameters style_key : str A style key. style_value : dict A dictionary with a "re_lookup" style value that consists of a sequence of items where each item should have the form `(regexp, x)`, where regexp is a regular expression to match against the field value and x is either a style attribute (str) and a boolean flag indicating to use the style attribute named by `style_key`. re_flags : int Passed through as flags argument to re.compile. Returns ------- A function. """

        style_attr = style_key if self.style_types[style_key] is bool else None
        regexps = [(re.compile(r, flags=re_flags), v)
                   for r, v in style_value["re_lookup"]]

        def proc(value, result):
            if not isinstance(value, six.string_types):
                return result
            for r, lookup_value in regexps:
                if r.search(value):
                    if not lookup_value:
                        return result
                    return self.render(style_attr or lookup_value, result)
            return result
        return proc