How to use the webtest.utils.make_pattern function in WebTest

def _find_element(self, tag, href_attr, href_extract,
                      content, id,
                      href_pattern,
                      index, verbose):
        content_pat = utils.make_pattern(content)
        id_pat = utils.make_pattern(id)
        href_pat = utils.make_pattern(href_pattern)

        def printlog(s):
            if verbose:
                print(s)

        found_links = []
        total_links = 0
        for element in self.html.find_all(tag):
            el_html = str(element)
            el_content = element.decode_contents()
            attrs = element
            if verbose:
                printlog('Element: %r' % el_html)
            if not attrs.get(href_attr):
                printlog('  Skipped: no %s attribute' % href_attr)
                continue

def call_FUT(self, obj):
        from webtest.utils import make_pattern
        return make_pattern(obj)

def _find_element(self, tag, href_attr, href_extract,
                      content, id,
                      href_pattern,
                      index, verbose):
        content_pat = utils.make_pattern(content)
        id_pat = utils.make_pattern(id)
        href_pat = utils.make_pattern(href_pattern)

        def printlog(s):
            if verbose:
                print(s)

        found_links = []
        total_links = 0
        for element in self.html.find_all(tag):
            el_html = str(element)
            el_content = element.decode_contents()
            attrs = element
            if verbose:
                printlog('Element: %r' % el_html)
            if not attrs.get(href_attr):

def _find_element(self, tag, href_attr, href_extract,
                      content, id,
                      href_pattern,
                      index, verbose):
        content_pat = utils.make_pattern(content)
        id_pat = utils.make_pattern(id)
        href_pat = utils.make_pattern(href_pattern)

        def printlog(s):
            if verbose:
                print(s)

        found_links = []
        total_links = 0
        for element in self.html.find_all(tag):
            el_html = str(element)
            el_content = element.decode_contents()
            attrs = element
            if verbose:
                printlog('Element: %r' % el_html)
            if not attrs.get(href_attr):
                printlog('  Skipped: no %s attribute' % href_attr)