Files
quantconnect--lean/Common/Exceptions/NoMethodMatchPythonExceptionInterpreter.cs
T
Martin-Molinero b9d3d99917
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Bump pythonNet version 2.0.12 (#6310)
* Updates after pythonNet rebase

* Bump pythonNet version 2.0.12

* Fix exception types being thrown
2022-05-02 14:38:50 -03:00

63 lines
2.7 KiB
C#

/*
* QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
* Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
*
* 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.
*/
using System;
using Python.Runtime;
using QuantConnect.Util;
namespace QuantConnect.Exceptions
{
/// <summary>
/// Interprets <see cref="NoMethodMatchPythonExceptionInterpreter"/> instances
/// </summary>
public class NoMethodMatchPythonExceptionInterpreter : PythonExceptionInterpreter
{
/// <summary>
/// Determines the order that an instance of this class should be called
/// </summary>
public override int Order => 0;
/// <summary>
/// Determines if this interpreter should be applied to the specified exception.
/// </summary>
/// <param name="exception">The exception to check</param>
/// <returns>True if the exception can be interpreted, false otherwise</returns>
public override bool CanInterpret(Exception exception)
{
return base.CanInterpret(exception) &&
exception.Message.Contains("No method match");
}
/// <summary>
/// Interprets the specified exception into a new exception
/// </summary>
/// <param name="exception">The exception to be interpreted</param>
/// <param name="innerInterpreter">An interpreter that should be applied to the inner exception.</param>
/// <returns>The interpreted exception</returns>
public override Exception Interpret(Exception exception, IExceptionInterpreter innerInterpreter)
{
var pe = (PythonException)exception;
var startIndex = pe.Message.LastIndexOfInvariant(" ");
var methodName = pe.Message.Substring(startIndex).Trim();
var message = $"Trying to dynamically access a method that does not exist throws a TypeError exception. To prevent the exception, ensure each parameter type matches those required by the {methodName} method. Please checkout the API documentation.";
message += PythonUtil.PythonExceptionStackParser(pe.StackTrace);
return new MissingMethodException(message, pe);
}
}
}