Add code execution python sample

samples/code_execution.py

@@ -0,0 +1,51 @@
+# -*- coding: utf-8 -*-
+# Copyright 2023 Google LLC
+#
+# 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.
+from absl.testing import absltest
+
+import google.generativeai as genai
+
+
+class UnitTests(absltest.TestCase):
+    def test_code_execution_basic(self):
+        # [START code_execution_basic]
+        model = genai.GenerativeModel(model_name="gemini-1.5-flash", tools="code_execution")
+        result = model.generate_content(
+            "What's the sum of the sum of first 200 prime numbers? Make sure you get all 200."
+        )
+        print(result.text)
+        # [END code_execution_basic]
+
+    def test_code_execution_request_override(self):
+        # [START code_execution_request_override]
+        model = genai.GenerativeModel(model_name="gemini-1.5-flash")
+        result = model.generate_content(
+            "Write code to count how many letter r in the word strawberry", tools="code_execution"
+        )
+        print(result.text)
+        # [END code_execution_request_override]
+
+    def test_code_execution_chat(self):
+        # [START code_execution_chat]
+        model = genai.GenerativeModel(model_name="gemini-1.5-flash", tools="code_execution")
+        chat = model.start_chat()
+        result = chat.send_message(
+            "Can you run some code to bogo-sort this list of numbers?: [2,34,1,65,4]"
+        )
+        print(result.text)
+        # [END code_execution_chat]
+
+
+if __name__ == "__main__":
+    absltest.main()