Python warnings.resetwarnings() Examples

def setUp(self):
        self.server = self.server_class()
        self.server.start()
        self.client = self.client_class(timeout=TIMEOUT)
        self.client.encoding = 'utf8'  # PY3 only
        self.client.connect(self.server.host, self.server.port)
        self.client.login(USER, PASSWD)
        if PY3:
            safe_mkdir(bytes(TESTFN_UNICODE, 'utf8'))
            touch(bytes(TESTFN_UNICODE_2, 'utf8'))
            self.utf8fs = TESTFN_UNICODE in os.listdir('.')
        else:
            warnings.filterwarnings("ignore")
            safe_mkdir(TESTFN_UNICODE)
            touch(TESTFN_UNICODE_2)
            self.utf8fs = unicode(TESTFN_UNICODE, 'utf8') in os.listdir(u('.'))
            warnings.resetwarnings() 

def test_bna_parameter_emits_warning():
    """A fake capability without any digits emits a warning."""
    import warnings
    from blessed.sequences import _build_any_numeric_capability

    # given,
    warnings.filterwarnings("error", category=UserWarning)
    term = mock.Mock()
    fake_cap = lambda *args: 'NO-DIGIT'
    term.fake_cap = fake_cap

    # excersize,
    try:
        _build_any_numeric_capability(term, 'fake_cap')
    except UserWarning:
        err = sys.exc_info()[1]
        assert err.args[0].startswith('Missing numerics in ')
    else:
        assert False, 'Previous stmt should have raised exception.'
    warnings.resetwarnings() 

def test_with_concat_features2(self):
        import warnings
        warnings.filterwarnings("ignore")

        from sklearn.datasets import load_iris
        from lale.lib.lale import Hyperopt
        from sklearn.metrics import accuracy_score
        data = load_iris()
        X, y = data.data, data.target
        pca = PCA(n_components=3)
        nys = Nystroem(n_components=10)
        concat = ConcatFeatures()
        lr = LogisticRegression(random_state=42, C=0.1)
        from lale.operators import make_pipeline
        pipeline = make_pipeline(((((SimpleImputer() | NoOp()) >> pca) & nys) >> concat >> lr) | KNeighborsClassifier())
        clf = Hyperopt(estimator=pipeline, max_evals=1, handle_cv_failure=True)
        trained = clf.fit(X, y)
        predictions = trained.predict(X)
        print(accuracy_score(y, predictions))
        warnings.resetwarnings() 

def test_catch_string(self):
        # Catching a string should trigger a DeprecationWarning.
        with warnings.catch_warnings():
            warnings.resetwarnings()
            warnings.filterwarnings("error")
            str_exc = "spam"
            with self.assertRaises(DeprecationWarning):
                try:
                    raise StandardError
                except str_exc:
                    pass

            # Make sure that even if the string exception is listed in a tuple
            # that a warning is raised.
            with self.assertRaises(DeprecationWarning):
                try:
                    raise StandardError
                except (AssertionError, str_exc):
                    pass 

def stop_event_scheduler(instance):
    """ Disable the event scheduler on a given MySQL server.

    Args:
        instance: The hostAddr object to act upon.
    """
    cmd = 'SET GLOBAL event_scheduler=OFF'

    # If for some reason we're unable to disable the event scheduler,
    # that isn't likely to be a big deal, so we'll just pass after
    # logging the exception.
    try:
        conn = connect_mysql(instance)
        cursor = conn.cursor()
        warnings.filterwarnings('ignore', category=MySQLdb.Warning)
        log.info(cmd)
        cursor.execute(cmd)
    except Exception as e:
        log.error('Unable to stop event scheduler: {}'.format(e))
        pass
    finally:
        warnings.resetwarnings() 

def start_event_scheduler(instance):
    """ Enable the event scheduler on a given MySQL server.

    Args:
        instance: The hostAddr object to act upon.
    """
    cmd = 'SET GLOBAL event_scheduler=ON'

    # We don't use the event scheduler in many places, but if we're
    # not able to start it when we want to, that could be a big deal.
    try:
        conn = connect_mysql(instance)
        cursor = conn.cursor()
        warnings.filterwarnings('ignore', category=MySQLdb.Warning)
        log.info(cmd)
        cursor.execute(cmd)
    except Exception as e:
        log.error('Unable to start event scheduler: {}'.format(e))
        raise
    finally:
        warnings.resetwarnings() 

def drop_db(instance, db):
    """ Drop a database, if it exists.

    Args:
    instance - a hostAddr object
    db - the name of the db to be dropped
    """
    conn = connect_mysql(instance)
    cursor = conn.cursor()

    sql = ('DROP DATABASE IF EXISTS `{}`'.format(db))
    log.info(sql)

    # If the DB isn't there, we'd throw a warning, but we don't
    # actually care; this will be a no-op.
    warnings.filterwarnings('ignore', category=MySQLdb.Warning)
    cursor.execute(sql)
    warnings.resetwarnings() 

def create_db(instance, db):
    """ Create a database if it does not already exist

    Args:
    instance - a hostAddr object
    db - the name of the db to be created
    """
    conn = connect_mysql(instance)
    cursor = conn.cursor()

    sql = ('CREATE DATABASE IF NOT EXISTS `{}`'.format(db))
    log.info(sql)

    # We don't care if the db already exists and this was a no-op
    warnings.filterwarnings('ignore', category=MySQLdb.Warning)
    cursor.execute(sql)
    warnings.resetwarnings() 

def _run_generated_code(self, code, globs, locs,
                            fails_under_py3k=True,
                           ):
        import warnings
        from zope.interface._compat import PYTHON3
        with warnings.catch_warnings(record=True) as log:
            warnings.resetwarnings()
            if not PYTHON3:
                exec(code, globs, locs)
                self.assertEqual(len(log), 0) # no longer warn
                return True
            else:
                try:
                    exec(code, globs, locs)
                except TypeError:
                    return False
                else:
                    if fails_under_py3k:
                        self.fail("Didn't raise TypeError") 

def test_ctrb_siso_deprecated(self):
        A = np.array([[1., 2.], [3., 4.]])
        B = np.array([[5.], [7.]])
        
        # Check that default using np.matrix generates a warning
        # TODO: remove this check with matrix type is deprecated
        warnings.resetwarnings()
        with warnings.catch_warnings(record=True) as w:
            use_numpy_matrix(True)
            self.assertTrue(issubclass(w[-1].category, UserWarning))
            
            Wc = ctrb(A, B)
            self.assertTrue(isinstance(Wc, np.matrix))
            self.assertTrue(issubclass(w[-1].category,
                                       PendingDeprecationWarning))
            use_numpy_matrix(False) 

def test_emit_warnings_about_binpacked(unsupported_sequence_terminals):
    """Test known binary-packed terminals (kermit, avatar) emit a warning."""
    @as_subprocess
    def child(kind):
        import warnings
        from blessed.sequences import _BINTERM_UNSUPPORTED_MSG
        warnings.filterwarnings("error", category=RuntimeWarning)
        warnings.filterwarnings("error", category=UserWarning)

        try:
            TestTerminal(kind=kind, force_styling=True)
        except UserWarning:
            err = sys.exc_info()[1]
            assert (err.args[0] == _BINTERM_UNSUPPORTED_MSG or
                    err.args[0].startswith('Unknown parameter in ')
                    ), err
        else:
            assert 'warnings should have been emitted.'
        warnings.resetwarnings()

    child(unsupported_sequence_terminals) 

def test_catch_string(self):
        # Catching a string should trigger a DeprecationWarning.
        with warnings.catch_warnings():
            warnings.resetwarnings()
            warnings.filterwarnings("error")
            str_exc = "spam"
            with self.assertRaises(DeprecationWarning):
                try:
                    raise StandardError
                except str_exc:
                    pass

            # Make sure that even if the string exception is listed in a tuple
            # that a warning is raised.
            with self.assertRaises(DeprecationWarning):
                try:
                    raise StandardError
                except (AssertionError, str_exc):
                    pass 

def test_setupterm_invalid_issue39():
    "A warning is emitted if TERM is invalid."
    # https://bugzilla.mozilla.org/show_bug.cgi?id=878089

    # if TERM is unset, defaults to 'unknown', which should
    # fail to lookup and emit a warning, only.
    @as_subprocess
    def child():
        warnings.filterwarnings("error", category=UserWarning)

        try:
            term = TestTerminal(kind='unknown', force_styling=True)
        except UserWarning:
            err = sys.exc_info()[1]
            assert err.args[0] == 'Failed to setupterm(kind=unknown)'
        else:
            assert not term.is_a_tty and not term.does_styling, (
                'Should have thrown exception')
        warnings.resetwarnings()

    child() 

def test_setupterm_singleton_issue33():
    "A warning is emitted if a new terminal ``kind`` is used per process."
    @as_subprocess
    def child():
        warnings.filterwarnings("error", category=UserWarning)

        # instantiate first terminal, of type xterm-256color
        term = TestTerminal(force_styling=True)

        try:
            # a second instantiation raises UserWarning
            term = TestTerminal(kind="vt220", force_styling=True)
        except UserWarning:
            err = sys.exc_info()[1]
            assert (err.args[0].startswith(
                    'A terminal of kind "vt220" has been requested')
                    ), err.args[0]
            assert ('a terminal of kind "xterm-256color" will '
                    'continue to be returned' in err.args[0]), err.args[0]
        else:
            # unless term is not a tty and setupterm() is not called
            assert not term.is_a_tty or False, 'Should have thrown exception'
        warnings.resetwarnings()

    child() 

def test_deprecated():

    @jams.core.deprecated('old version', 'new version')
    def _foo():
        pass

    warnings.resetwarnings()
    warnings.simplefilter('always')
    with warnings.catch_warnings(record=True) as out:
        _foo()

        # And that the warning triggered
        assert len(out) > 0

        # And that the category is correct
        assert out[0].category is DeprecationWarning

        # And that it says the right thing (roughly)
        assert 'deprecated' in str(out[0].message).lower() 

def test_setupterm_invalid_has_no_styling():
    "An unknown TERM type does not perform styling."
    # https://bugzilla.mozilla.org/show_bug.cgi?id=878089

    # if TERM is unset, defaults to 'unknown', which should
    # fail to lookup and emit a warning, only.
    @as_subprocess
    def child():
        warnings.filterwarnings("ignore", category=UserWarning)

        term = TestTerminal(kind='unknown', force_styling=True)
        assert term._kind is None
        assert term.does_styling is False
        assert term.number_of_colors == 0
        warnings.resetwarnings()

    child() 

def test_called_from_function(self):
        import warnings
        from zope.interface.declarations import implements
        from zope.interface.interface import InterfaceClass
        IFoo = InterfaceClass("IFoo")
        globs = {'implements': implements, 'IFoo': IFoo}
        locs = {}
        CODE = "\n".join([
            'def foo():',
            '    implements(IFoo)'
            ])
        if self._run_generated_code(CODE, globs, locs, False):
            foo = locs['foo']
            with warnings.catch_warnings(record=True) as log:
                warnings.resetwarnings()
                self.assertRaises(TypeError, foo)
                self.assertEqual(len(log), 0) # no longer warn 

def write_res(filename, datas, extnames, header='', hdrref=None, clobber=False):
   if not header and hdrref: header = pyfits.getheader(hdrref)
   hdu = pyfits.PrimaryHDU(header=header)
   warnings.resetwarnings() # supress nasty overwrite warning http://pythonhosted.org/pyfits/users_guide/users_misc.html
   warnings.filterwarnings('ignore', category=UserWarning, append=True)
   hdu.writeto(filename, clobber=clobber, output_verify='fix')
   warnings.resetwarnings()
   warnings.filterwarnings('always', category=UserWarning, append=True)

   for i,extname in enumerate(extnames):
     data = datas[extname]
     if isinstance(data, np.ndarray):
        pyfits.append(filename, data)
     else:
        1/0

     pyfits.setval(filename, 'EXTNAME', value=extname, ext=i+1)
   #fitsio.write(filename, flux) 

def setUp(self):
        self.server = self.server_class()
        self.server.start()
        self.client = self.client_class(timeout=TIMEOUT)
        self.client.encoding = 'utf8'  # PY3 only
        self.client.connect(self.server.host, self.server.port)
        self.client.login(USER, PASSWD)
        if PY3:
            safe_mkdir(bytes(TESTFN_UNICODE, 'utf8'))
            touch(bytes(TESTFN_UNICODE_2, 'utf8'))
            self.utf8fs = TESTFN_UNICODE in os.listdir('.')
        else:
            warnings.filterwarnings("ignore")
            safe_mkdir(TESTFN_UNICODE)
            touch(TESTFN_UNICODE_2)
            self.utf8fs = unicode(TESTFN_UNICODE, 'utf8') in os.listdir(u('.'))
            warnings.resetwarnings() 

def test_amz_date_warning(self):
        """
        Will be removed when deprecated amz_date attribute is removed

        """
        warnings.resetwarnings()
        with warnings.catch_warnings(record=True) as w:
            obj = AWS4SigningKey('secret_key', 'region', 'service')
            if PY2:
                warnings.simplefilter('always')
                obj.amz_date
                self.assertEqual(len(w), 1)
                self.assertEqual(w[-1].category, DeprecationWarning)
            else:
                warnings.simplefilter('ignore')
                self.assertWarns(DeprecationWarning, getattr, obj, 'amz_date') 

def test_catch_string(self):
        # Catching a string should trigger a DeprecationWarning.
        with warnings.catch_warnings():
            warnings.resetwarnings()
            warnings.filterwarnings("error")
            str_exc = "spam"
            with self.assertRaises(DeprecationWarning):
                try:
                    raise StandardError
                except str_exc:
                    pass

            # Make sure that even if the string exception is listed in a tuple
            # that a warning is raised.
            with self.assertRaises(DeprecationWarning):
                try:
                    raise StandardError
                except (AssertionError, str_exc):
                    pass 

def test_called_twice_from_class(self):
        import warnings
        from zope.interface.declarations import implements
        from zope.interface.interface import InterfaceClass
        from zope.interface._compat import PYTHON3
        IFoo = InterfaceClass("IFoo")
        IBar = InterfaceClass("IBar")
        globs = {'implements': implements, 'IFoo': IFoo, 'IBar': IBar}
        locs = {}
        CODE = "\n".join([
            'class Foo(object):',
            '    implements(IFoo)',
            '    implements(IBar)',
            ])
        with warnings.catch_warnings(record=True) as log:
            warnings.resetwarnings()
            try:
                exec(CODE, globs, locs)
            except TypeError:
                if not PYTHON3:
                    self.assertEqual(len(log), 0) # no longer warn
            else:
                self.fail("Didn't raise TypeError") 

def test_called_from_function(self):
        import warnings
        from zope.interface.declarations import classProvides
        from zope.interface.interface import InterfaceClass
        from zope.interface._compat import PYTHON3
        IFoo = InterfaceClass("IFoo")
        globs = {'classProvides': classProvides, 'IFoo': IFoo}
        locs = {}
        CODE = "\n".join([
            'def foo():',
            '    classProvides(IFoo)'
            ])
        exec(CODE, globs, locs)
        foo = locs['foo']
        with warnings.catch_warnings(record=True) as log:
            warnings.resetwarnings()
            self.assertRaises(TypeError, foo)
            if not PYTHON3:
                self.assertEqual(len(log), 0) # no longer warn 

def _run_generated_code(self, code, globs, locs,
                            fails_under_py3k=True,
                           ):
        import warnings
        from zope.interface._compat import PYTHON3
        with warnings.catch_warnings(record=True) as log:
            warnings.resetwarnings()
            if not PYTHON3:
                exec(code, globs, locs)
                self.assertEqual(len(log), 0) # no longer warn
                return True
            else:
                try:
                    exec(code, globs, locs)
                except TypeError:
                    return False
                else:
                    if fails_under_py3k:
                        self.fail("Didn't raise TypeError") 

def test_setupterm_invalid_has_no_styling():
    "An unknown TERM type does not perform styling."
    # https://bugzilla.mozilla.org/show_bug.cgi?id=878089

    # if TERM is unset, defaults to 'unknown', which should
    # fail to lookup and emit a warning, only.
    @as_subprocess
    def child():
        warnings.filterwarnings("ignore", category=UserWarning)

        term = TestTerminal(kind='xxXunknownXxx', force_styling=True)
        assert term.kind is None
        assert not term.does_styling
        assert term.number_of_colors == 0
        warnings.resetwarnings()

    child() 

def test_called_from_function(self):
        import warnings
        from zope.interface.declarations import implements
        from zope.interface.interface import InterfaceClass
        IFoo = InterfaceClass("IFoo")
        globs = {'implements': implements, 'IFoo': IFoo}
        locs = {}
        CODE = "\n".join([
            'def foo():',
            '    implements(IFoo)'
            ])
        if self._run_generated_code(CODE, globs, locs, False):
            foo = locs['foo']
            with warnings.catch_warnings(record=True) as log:
                warnings.resetwarnings()
                self.assertRaises(TypeError, foo)
                self.assertEqual(len(log), 0) # no longer warn 

def test_called_twice_from_class(self):
        import warnings
        from zope.interface.declarations import implements
        from zope.interface.interface import InterfaceClass
        from zope.interface._compat import PYTHON3
        IFoo = InterfaceClass("IFoo")
        IBar = InterfaceClass("IBar")
        globs = {'implements': implements, 'IFoo': IFoo, 'IBar': IBar}
        locs = {}
        CODE = "\n".join([
            'class Foo(object):',
            '    implements(IFoo)',
            '    implements(IBar)',
            ])
        with warnings.catch_warnings(record=True) as log:
            warnings.resetwarnings()
            try:
                exec(CODE, globs, locs)
            except TypeError:
                if not PYTHON3:
                    self.assertEqual(len(log), 0) # no longer warn
            else:
                self.fail("Didn't raise TypeError") 

def test_called_from_function(self):
        import warnings
        from zope.interface.declarations import classProvides
        from zope.interface.interface import InterfaceClass
        from zope.interface._compat import PYTHON3
        IFoo = InterfaceClass("IFoo")
        globs = {'classProvides': classProvides, 'IFoo': IFoo}
        locs = {}
        CODE = "\n".join([
            'def foo():',
            '    classProvides(IFoo)'
            ])
        exec(CODE, globs, locs)
        foo = locs['foo']
        with warnings.catch_warnings(record=True) as log:
            warnings.resetwarnings()
            self.assertRaises(TypeError, foo)
            if not PYTHON3:
                self.assertEqual(len(log), 0) # no longer warn 

def test_setupterm_invalid_issue39():
    "A warning is emitted if TERM is invalid."
    # https://bugzilla.mozilla.org/show_bug.cgi?id=878089
    #
    # if TERM is unset, defaults to 'unknown', which should
    # fail to lookup and emit a warning on *some* systems.
    # freebsd actually has a termcap entry for 'unknown'
    @as_subprocess
    def child():
        warnings.filterwarnings("error", category=UserWarning)

        try:
            term = TestTerminal(kind='unknown', force_styling=True)
        except UserWarning:
            err = sys.exc_info()[1]
            assert err.args[0] == (
                "Failed to setupterm(kind='unknown'): "
                "setupterm: could not find terminal")
        else:
            if platform.system().lower() != 'freebsd':
                assert not term.is_a_tty and not term.does_styling, (
                    'Should have thrown exception')
        warnings.resetwarnings()

    child() 

def test_setupterm_singleton_issue33():
    "A warning is emitted if a new terminal ``kind`` is used per process."
    @as_subprocess
    def child():
        warnings.filterwarnings("error", category=UserWarning)

        # instantiate first terminal, of type xterm-256color
        term = TestTerminal(force_styling=True)

        try:
            # a second instantiation raises UserWarning
            term = TestTerminal(kind="vt220", force_styling=True)
        except UserWarning:
            err = sys.exc_info()[1]
            assert (err.args[0].startswith(
                    'A terminal of kind "vt220" has been requested')
                    ), err.args[0]
            assert ('a terminal of kind "xterm-256color" will '
                    'continue to be returned' in err.args[0]), err.args[0]
        else:
            # unless term is not a tty and setupterm() is not called
            assert not term.is_a_tty or False, 'Should have thrown exception'
        warnings.resetwarnings()

    child()