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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 _free_shortcut(self, shortcut):
 """ Replace the shortcut of elements, that has the shortcut passed. :param shortcut: The shortcut. :type shortcut: str """


        alpha_numbers = '1234567890abcdefghijklmnopqrstuvwxyz'
        elements = self.parser.find('[accesskey]').list_results()
        found = False
        for element in elements:
            shortcuts = element.get_attribute('accesskey').lower()
            if CommonFunctions.in_list(shortcuts, shortcut):
                for key in alpha_numbers:
                    found = True
                    for element_with_shortcuts in elements:
                        shortcuts = element_with_shortcuts.get_attribute(
                            'accesskey'
                        ).lower()
                        if CommonFunctions.in_list(shortcuts, key):
                            found = False
                            break
                    if found:
                        element.set_attribute('accesskey', key)
                        break
                if found:
                    break