Add issues if users want to assign to operators.

parso/python/normalizer.py

@@ -473,6 +473,17 @@ class ErrorFinder(Normalizer):
             self._add_syntax_error(message, node)
         elif type_ == 'test':
             error = 'conditional expression'
+        elif type_ == 'atom_expr':
+            if node.children[0] == 'await':
+                error = 'await expression'
+        elif type_ in ('testlist_star_expr', 'exprlist'):
+            for child in node.children[::2]:
+                self._check_assignment(child, is_deletion)
+        elif ('expr' in type_ and type_ != 'star_expr' # is a substring
+              or '_test' in type_
+              or type_ in ('term', 'factor')):
+            error = 'operator'
+
         print(node)
 
         if error is not None:

test/test_python_errors.py

@@ -115,11 +115,17 @@ def test_indentation_errors(code, positions):
         'b"" = 1',
         'b"" = 1',
         '"" "" = 1',
+        '1 | 1 = 3',
+        '~ 1 = 3',
+        'not 1 = 3',
+        '1 and 1 = 3',
         'def foo(): (yield 1) = 3',
         'def foo(): x = yield 1 = 3',
+        'async def foo(): await x = 3',
         '(a if a else a) = a',
         '(True,) = x',
         '([False], a) = x',
+        'a, 1 = x',
 
         # SyntaxErrors from Python/symtable.c
         'def f(x, x): pass',