How to use test_contains_key_single_item_failure method in assertpy

Best Python code snippet using assertpy_python

test_dict.py

...109        assert_that(123).does_not_contain_key(1)110        fail('should have raised error')111    except TypeError as ex:112        assert_that(str(ex)).contains('is not dict-like')113def test_contains_key_single_item_failure():114    try:115        assert_that({'a': 1, 'b': 2, 'c': 3}).contains_key('x')116        fail('should have raised error')117    except AssertionError as ex:118        assert_that(str(ex)).ends_with('to contain key <x>, but did not.')119def test_contains_key_multi_item_failure():120    try:121        assert_that({'a': 1, 'b': 2, 'c': 3}).contains_key('a', 'x', 'z')122        fail('should have raised error')123    except AssertionError as ex:124        assert_that(str(ex)).ends_with("to contain keys <'a', 'x', 'z'>, but did not contain keys <'x', 'z'>.")125def test_does_not_contain():126    assert_that({'a': 1, 'b': 2, 'c': 3}).does_not_contain('x')127    assert_that({'a': 1, 'b': 2, 'c': 3}).does_not_contain('x', 'y')...

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