Python future.standard_library.suspend_hooks() Examples

The following are 3 code examples of future.standard_library.suspend_hooks(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module future.standard_library , or try the search function .
Example #1
Source File: test_standard_library.py    From kgsgo-dataset-preprocessor with Mozilla Public License 2.0 6 votes vote down vote up 
def test_suspend_hooks(self):
        """
        Code like the try/except block here appears in Pyflakes v0.6.1. This
        method tests whether suspend_hooks() works as advertised.
        """
        example_PY2_check = False
        with standard_library.suspend_hooks():
            # An example of fragile import code that we don't want to break:
            try:
                import builtins
            except ImportError:
                example_PY2_check = True
        if utils.PY2:
            self.assertTrue(example_PY2_check)
        else:
            self.assertFalse(example_PY2_check)
        # The import should succeed again now:
        import builtins
Example #2
Source File: test_standard_library.py    From kgsgo-dataset-preprocessor with Mozilla Public License 2.0 6 votes vote down vote up 
def test_old_urllib_import(self):
        """
        Tests whether an imported module can import the old urllib package.
        Importing future.standard_library in a script should be possible and
        not disrupt any uses of the old Py2 standard library names in modules
        imported by that script.
        """
        code1 = '''
                from future import standard_library
                with standard_library.suspend_hooks():
                    import module_importing_old_urllib
                '''
        self._write_test_script(code1, 'runme.py')
        code2 = '''
                import urllib
                assert 'urlopen' in dir(urllib)
                print('Import succeeded!')
                '''
        self._write_test_script(code2, 'module_importing_old_urllib.py')
        output = self._run_test_script('runme.py')
        print(output)
        self.assertTrue(True)
Example #3
Source File: test_standard_library.py    From kgsgo-dataset-preprocessor with Mozilla Public License 2.0 5 votes vote down vote up 
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)