remove query manager, which is never used

datascience/tables.py

@@ -1,6 +1,6 @@
 """Tables are sequences of labeled columns."""
 
-__all__ = ['Table', 'Q']
+__all__ = ['Table']
 
 import abc
 import collections
@@ -1789,23 +1789,6 @@ def __repr__(self):
             return '{0}({1})'.format(type(self).__name__, repr(self._table))
 
 
-
-class Q:
-    """Query manager for Tables."""
-    array = None
-
-    def __init__(self, array):
-        """save numpy array"""
-        self.array = array
-
-    def __and__(self, other):
-        """allows bitwise & operations"""
-        return np.logical_and(self.array, other.array)
-
-    def __or__(self, other):
-        return np.logical_or(self.array, other.array)
-
-
 def _zero_on_type_error(column_fn):
     """Wrap a function on an np.ndarray to return 0 on a type error."""
     if not column_fn:

tests/test_tables.py

@@ -962,39 +962,6 @@ def test_scatter_error(table):
     with pytest.raises(ValueError):
         table.scatter('letter')
 
-###########
-# Queries #
-###########
-
-
-def test_q_and(table):
-    """Test that Q performs logical AND correctly"""
-    test = table.where(Q(table['letter'] < 'c') & Q(table['points'] > 1))
-    assert_equal(test, """
-    letter | count | points
-    b      | 3     | 2
-    """)
-
-
-def test_q_or(table):
-    """Test that Q performs logical OR correctly"""
-    test = table.where(Q(table['letter'] < 'b') | Q(table['points'] > 2))
-    assert_equal(test, """
-    letter | count | points
-    a      | 9     | 1
-    z      | 1     | 10
-    """)
-
-
-def test_q_chaining(table):
-    """Tests that successive Qs can be added"""
-    test_q_or_filter = Q(table['letter'] < 'b') | Q(table['points'] > 2)
-    test = table.where(Q(test_q_or_filter) & Q(table['count'] > 2))
-    assert_equal(test, """
-    letter | count | points
-    a      | 9     | 1
-    """)
-
 def test_df_roundtrip(table):
     df = table.to_df()
     assert isinstance(df, pd.DataFrame)