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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 _get_index_urls_locations(self, project_name):
 # type: (str) -> List[str] """Returns the locations found via self.index_urls Checks the url_name on the main (first in the list) index and use this url_name to produce all locations """


        def mkurl_pypi_url(url):
            loc = posixpath.join(
                url,
                urllib_parse.quote(canonicalize_name(project_name)))
            # For maximum compatibility with easy_install, ensure the path
            # ends in a trailing slash.  Although this isn't in the spec
            # (and PyPI can handle it without the slash) some other index
            # implementations might break if they relied on easy_install's
            # behavior.
            if not loc.endswith('/'):
                loc = loc + '/'
            return loc

        return [mkurl_pypi_url(url) for url in self.index_urls]