Update test_period_range.py

Fixing PEP formatting

Author: jnecus

pandas/tests/indexes/period/test_period_range.py

@@ -50,13 +50,13 @@ def test_construction_from_period(self):
         ).to_period()
         result = period_range(start=start, end=end, freq="Q", name="foo")
         tm.assert_index_equal(result, expected)
-
+        
         result = period_range(start=start, end=end, freq="Q", name="foo")        
-        tm.assert_equal(result ,result.values)
+        tm.assert_equal(result, result.values)
 
         # empty
         expected = PeriodIndex([], freq="W", name="foo")
-
+        
         result = period_range(start=start, periods=0, freq="W", name="foo")
         tm.assert_index_equal(result, expected)