Skip int(x) keyword tests with Python 3.7

The first argument must be positional since
python/cpython@2e56424

Author: sbraz

tests/test_future/test_int.py

@@ -265,12 +265,17 @@ def test_small_ints(self):
     def test_no_args(self):
         self.assertEqual(int(), 0)
 
-    def test_keyword_args(self):
+    @unittest.skipIf(sys.version_info >= (3, 7),
+            "The first parameter must be positional with Python >= 3.7"
+    )
+    def test_x_keyword_arg(self):
         # Test invoking int() using keyword arguments.
         self.assertEqual(int(x=1.2), 1)
-        self.assertEqual(int('100', base=2), 4)
         self.assertEqual(int(x='100', base=2), 4)
 
+    def text_base_keyword_arg(self):
+        self.assertEqual(int('100', base=2), 4)
+
     def test_newint_plus_float(self):
         minutes = int(100)
         second = 0.0