nautilus_common/python/
runtime.rs

1// -------------------------------------------------------------------------------------------------
2//  Copyright (C) 2015-2025 Nautech Systems Pty Ltd. All rights reserved.
3//  https://nautechsystems.io
4//
5//  Licensed under the GNU Lesser General Public License Version 3.0 (the "License");
6//  You may not use this file except in compliance with the License.
7//  You may obtain a copy of the License at https://www.gnu.org/licenses/lgpl-3.0.en.html
8//
9//  Unless required by applicable law or agreed to in writing, software
10//  distributed under the License is distributed on an "AS IS" BASIS,
11//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12//  See the License for the specific language governing permissions and
13//  limitations under the License.
14// -------------------------------------------------------------------------------------------------
15
16//! Python-specific runtime initialization.
17//!
18//! This module handles the Python interpreter initialization that must occur
19//! before the Tokio runtime is used from Python extension modules.
20
21use std::sync::Once;
22
23use pyo3::Python;
24
25static PYTHON_INIT: Once = Once::new();
26
27/// Initializes the Python interpreter for use with the async runtime.
28///
29/// Python hosts the process when we build as an extension module. This function
30/// keeps the interpreter alive for the lifetime of the shared Tokio runtime
31/// so every worker thread sees a prepared PyO3 environment before using it.
32///
33/// This function is idempotent and safe to call multiple times.
34pub fn initialize_python() {
35    PYTHON_INIT.call_once(|| {
36        Python::initialize();
37    });
38}
nautilus_common/python/runtime.rs

nautilus_common/python/
runtime.rs
