initial python impl

python/tests/test_db.py

@@ -0,0 +1,28 @@
+#  Copyright 2023 LanceDB Developers
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+import lancedb
+
+
+def test_basic(tmp_path):
+    db = lancedb.connect(tmp_path)
+    table = db.create_table("test",
+                            data=[{"vector": [3.1, 4.1], "item": "foo", "price": 10.0},
+                                  {"vector": [5.9, 26.5], "item": "bar", "price": 20.0}])
+    rs = table.search([100, 100]).limit(1).to_df()
+    assert len(rs) == 1
+    assert rs["item"].iloc[0] == "bar"
+
+    rs = table.search([100, 100]).where("price < 15").limit(1).to_df()
+    assert len(rs) == 1
+    assert rs["item"].iloc[0] == "foo"