Jared Broad
73 lines
3.0 KiB
C#
73 lines
3.0 KiB
C#
/*
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* QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
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* Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
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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 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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*
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*/
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using Python.Runtime;
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namespace QuantConnect.Python
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{
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/// <summary>
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/// Helper class for Python initialization
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/// </summary>
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public static class PythonInitializer
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{
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// Used to allow multiple Python unit and regression tests to be run in the same test run
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private static bool _initialized;
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/// <summary>
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/// Initialize the Python.NET library
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/// </summary>
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public static void Initialize(string assemblyPath = "")
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{
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if (!_initialized)
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{
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if (assemblyPath != string.Empty)
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{
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// Set the python path for loading python algorithms.
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var pythonPath = new List<string>
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{
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new FileInfo(assemblyPath).Directory.FullName,
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new DirectoryInfo(Environment.CurrentDirectory).FullName,
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};
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// Don't include an empty environment variable in pythonPath, otherwise the PYTHONPATH
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// environment variable won't be used in the module import process
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var pythonPathEnvironmentVariable = Environment.GetEnvironmentVariable("PYTHONPATH");
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if (!string.IsNullOrEmpty(pythonPathEnvironmentVariable))
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{
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pythonPath.Add(pythonPathEnvironmentVariable);
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}
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Environment.SetEnvironmentVariable("PYTHONPATH", string.Join(OS.IsLinux ? ":" : ";", pythonPath));
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}
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var benchmark = Stopwatch.StartNew();
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PythonEngine.Initialize();
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Logging.Log.Trace("PythonInitializer.Initialize(): Python Engine Initialized in " + benchmark.Elapsed.TotalSeconds + "s. Thread: " + System.Threading.Thread.CurrentThread.Name);
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benchmark.Restart();
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// required for multi-threading usage
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PythonEngine.BeginAllowThreads();
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Logging.Log.Trace("PythonInitializer.Initialize(): Allow threading completed in " + benchmark.Elapsed.TotalSeconds + "s. Thread: " + System.Threading.Thread.CurrentThread.Name);
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_initialized = true;
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}
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}
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}
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}
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