Fix trailing comma error

parso/python/errors.py

@@ -586,7 +586,7 @@ class _TrailingImportComma(SyntaxRule):
     message = "trailing comma not allowed without surrounding parentheses"
 
     def is_issue(self, node):
-        if node.children[-1] == ',':
+        if node.children[-1] == ',' and node.parent.children[-1] != ')':
             return True
 
 

test/test_python_errors.py

@@ -307,3 +307,15 @@ def test_invalid_fstrings(code, message):
     """
     error, = _get_error_list(code, version='3.6')
     assert message in error.message
+
+
+@pytest.mark.parametrize(
+    'code', [
+        "from foo import (\nbar,\n rab,\n)",
+        "from foo import (bar, rab, )",
+    ]
+)
+def test_trailing_comma(code):
+    errors = _get_error_list(code)
+    assert not errors
+