Python urllib 模块，robotparser() 实例源码

def test_urllib_imports_moves(self):
        import future.moves.urllib
        import future.moves.urllib.parse
        import future.moves.urllib.request
        import future.moves.urllib.robotparser
        import future.moves.urllib.error
        import future.moves.urllib.response
        self.assertTrue(True)

def test_urllib_imports_install_aliases(self):
        with standard_library.suspend_hooks():
            standard_library.install_aliases()
            import urllib
            import urllib.parse
            import urllib.request
            import urllib.robotparser
            import urllib.error
            import urllib.response
            self.assertTrue(True)

def test_urllib_imports_cm(self):
        with standard_library.hooks():
            import urllib
            import urllib.parse
            import urllib.request
            import urllib.robotparser
            import urllib.error
            import urllib.response
        self.assertTrue(True)

def test_urllib_imports_install_hooks(self):
        standard_library.remove_hooks()
        standard_library.install_hooks()
        import urllib
        import urllib.parse
        import urllib.request
        import urllib.robotparser
        import urllib.error
        import urllib.response
        self.assertTrue(True)

def test_install_aliases(self):
        """
        Does the install_aliases() interface monkey-patch urllib etc. successfully?
        """
        from future.standard_library import remove_hooks, install_aliases
        remove_hooks()
        install_aliases()

        from collections import Counter, OrderedDict   # backported to Py2.6
        from collections import UserDict, UserList, UserString

        # Requires Python dbm support:
        # import dbm
        # import dbm.dumb
        # import dbm.gnu
        # import dbm.ndbm

        from itertools import filterfalse, zip_longest

        from subprocess import check_output    # backported to Py2.6
        from subprocess import getoutput, getstatusoutput

        from sys import intern

        # test_support may not be available (e.g. on Anaconda Py2.6):
        # import test.support

        import urllib.error
        import urllib.parse
        import urllib.request
        import urllib.response
        import urllib.robotparser

        self.assertTrue('urlopen' in dir(urllib.request))