StringToSymbolImplicitConversionRegressionAlgorithm.py

# 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.

from AlgorithmImports import *

### <summary>
### Related to GH issue 4275, reproduces a failed string to symbol implicit conversion asserting the exception
### thrown contains the used ticker
### </summary>
class StringToSymbolImplicitConversionRegressionAlgorithm(QCAlgorithm):
    def initialize(self):
        '''Initialise the data and resolution required, as well as the cash and start-end dates for your algorithm. All algorithms must initialized.'''
        self.set_start_date(2013,10, 7)
        self.set_end_date(2013,10, 8)

        self.add_equity("SPY", Resolution.MINUTE)

    def on_data(self, data):
        '''OnData event is the primary entry point for your algorithm. Each new data point will be pumped in here.

        Arguments:
            data: Slice object keyed by symbol containing the stock data
        '''
        try:
            self.market_order("PEPE", 1)
        except Exception as exception:
            if "PEPE was not found" in str(exception) and not self.portfolio.invested:
                self.set_holdings("SPY", 1)