Merging PR_218 openai_rev package with new streamlit chat app

venv/lib/python3.9/site-packages/streamlit/runtime/__init__.py

@@ -0,0 +1,40 @@
+# Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+#
+# 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.
+
+# Explicitly re-export public symbols from runtime.py and session_manager.py
+from streamlit.runtime.runtime import Runtime as Runtime
+from streamlit.runtime.runtime import RuntimeConfig as RuntimeConfig
+from streamlit.runtime.runtime import RuntimeState as RuntimeState
+from streamlit.runtime.session_manager import SessionClient as SessionClient
+from streamlit.runtime.session_manager import (
+    SessionClientDisconnectedError as SessionClientDisconnectedError,
+)
+
+
+def get_instance() -> Runtime:
+    """Return the singleton Runtime instance. Raise an Error if the
+    Runtime hasn't been created yet.
+    """
+    return Runtime.instance()
+
+
+def exists() -> bool:
+    """True if the singleton Runtime instance has been created.
+
+    When a Streamlit app is running in "raw mode" - that is, when the
+    app is run via `python app.py` instead of `streamlit run app.py` -
+    the Runtime will not exist, and various Streamlit functions need
+    to adapt.
+    """
+    return Runtime.exists()