Use 'pandas_query' parser by default for queries

Author: onesandzeroes

pandas/core/frame.py

@@ -1935,6 +1935,7 @@ def query(self, expr, **kwargs):
         >>> df[df.a > df.b]  # same result as the previous expression
         """
         kwargs['level'] = kwargs.pop('level', 0) + 1
+        kwargs['parser'] = kwargs.pop('parser', 'pandas_query')
         res = self.eval(expr, **kwargs)
 
         try:

pandas/tests/test_frame.py

@@ -15210,7 +15210,7 @@ class TestDataFrameQueryPythonPandas(TestDataFrameQueryNumExprPandas):
     def setUpClass(cls):
         super(TestDataFrameQueryPythonPandas, cls).setUpClass()
         cls.engine = 'python'
-        cls.parser = 'pandas'
+        cls.parser = 'pandas_query'
         cls.frame = _frame.copy()
 
     def test_query_builtin(self):