chore: import upstream snapshot with attribution

Algorithm.Python/SecurityToSymbolRegressionAlgorithm.py

@@ -0,0 +1,28 @@
+# 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>
+### Regression algorithm show casing ad asserting security to symbol implicit conversion
+### </summary>
+class SecurityToSymbolRegressionAlgorithm(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(2013,10,11)
+
+        asset = self.add_equity("SPY", Resolution.MINUTE)
+
+        self.schedule.on(self.date_rules.every_day(asset), self.time_rules.after_market_open(asset, 1), lambda: None if self.portfolio.invested else self.set_holdings(asset, 1))