50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
# Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022-2025)
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from __future__ import annotations
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from streamlit.runtime.runtime import Runtime, RuntimeConfig, RuntimeState
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from streamlit.runtime.session_manager import (
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SessionClient,
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SessionClientDisconnectedError,
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)
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def get_instance() -> Runtime:
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"""Return the singleton Runtime instance. Raise an Error if the
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Runtime hasn't been created yet.
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"""
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return Runtime.instance()
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def exists() -> bool:
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"""True if the singleton Runtime instance has been created.
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When a Streamlit app is running in "raw mode" - that is, when the
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app is run via `python app.py` instead of `streamlit run app.py` -
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the Runtime will not exist, and various Streamlit functions need
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to adapt.
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"""
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return Runtime.exists()
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__all__ = [
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"Runtime",
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"RuntimeConfig",
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"RuntimeState",
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"SessionClient",
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"SessionClientDisconnectedError",
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"exists",
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"get_instance",
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]
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