Merge https://github.com/JarryShaw/parso into master

test/failing_examples.py

@@ -319,3 +319,25 @@ if sys.version_info[:2] < (3, 8):
                     continue
             '''),  # 'continue' not supported inside 'finally' clause"
     ]
+
+if sys.version_info[:2] >= (3, 8):
+    # assignment expressions from issue#89
+    FAILING_EXAMPLES += [
+        # Case 2
+        '(lambda: x := 1)',
+        # Case 3
+        '(a[i] := x)',
+        # Case 4
+        '(a.b := c)',
+        # Case 5
+        '[i:= 0 for i, j in range(5)]',
+        '[[(i:= i) for j in range(5)] for i in range(5)]',
+        '[i for i, j in range(5) if True or (i:= 1)]',
+        '[False and (i:= 0) for i, j in range(5)]',
+        # Case 6
+        '[i+1 for i in (i:= range(5))]',
+        '[i+1 for i in (j:= range(5))]',
+        '[i+1 for i in (lambda: (j:= range(5)))()]',
+        # Case 7
+        'class Example:\n [(j := i) for i in range(5)]',
+    ]

test/test_python_errors.py

@@ -293,6 +293,19 @@ def test_valid_fstrings(code):
     assert not _get_error_list(code, version='3.6')
 
 
+@pytest.mark.parametrize(
+    'code', [
+        'a = (b := 1)',
+        '[x4 := x ** 5 for x in range(7)]',
+        '[total := total + v for v in range(10)]',
+        'while chunk := file.read(2):\n pass',
+        'numbers = [y := math.factorial(x), y**2, y**3]',
+    ]
+)
+def test_valid_namedexpr(code):
+    assert not _get_error_list(code, version='3.8')
+
+
 @pytest.mark.parametrize(
     ('code', 'message'), [
         ("f'{1+}'", ('invalid syntax')),