urllib.error.URLError: <urlopen error Unsupported protocol in URL 'git+http://example.com/repo'>

        >>> GitRepository._check_url('git://example.com/%09')

        Traceback (most recent call last):

        ...

        urllib.error.URLError: <urlopen error Invalid escape character in path: '%'>

        >>> GitRepository._check_url('git://example.com/%x00')

        Traceback (most recent call last):

        ...

        urllib.error.URLError: <urlopen error Invalid escape character in path: '%'>

        >>> GitRepository._check_url(r'git://example.com/\u0009')

        Traceback (most recent call last):

        ...

        urllib.error.URLError: <urlopen error Invalid escape character in path: '\'>

        >>> GitRepository._check_url(r'git://example.com/\t')

        Traceback (most recent call last):

        ...

        urllib.error.URLError: <urlopen error Invalid escape character in path: '\'>

        >>> GitRepository._check_url('git://example.com/\t')

        Traceback (most recent call last):

        ...

        urllib.error.URLError: <urlopen error Invalid ...>

        The failure above will be one of, depending on the level of WhatWG support:

        urllib.error.URLError: <urlopen error Invalid whitespace character in path: '\t'>

        """

        try:

            parsed_url = urllib.parse.urlparse(url)

            parsed_url.port  # trigger netloc parsing which might raise ValueError

        except ValueError:

            raise urllib.error.URLError("Error parsing URL: %r" % url)

        # check first if it's not an local url

        if os.path.isabs(url) and os.path.isdir(url):

            return

        unparsed_url = urllib.parse.urlunparse(parsed_url)

        if unparsed_url != url:

            raise urllib.error.URLError("Invalid url: '%s' normalizes to '%s'" % (url, unparsed_url))

        if parsed_url.scheme == 'git':

            # Mitigate problems elsewhere with incorrect handling of encoded paths.

            # Don't trust urllib.parse.unquote but be prepared for more flexible implementations elsewhere.

            # Space is the only allowed whitespace character - directly or % encoded. No other % or \ is allowed.

            for c in parsed_url.path.replace('%20', ' '):

                if c in '%\\':

                    raise urllib.error.URLError("Invalid escape character in path: '%s'" % c)

                if c.isspace() and c != ' ':

                    raise urllib.error.URLError("Invalid whitespace character in path: %r" % c)