diff --git a/Algorithm.CSharp/IndicatorVolatilityModelAlgorithm.cs b/Algorithm.CSharp/IndicatorVolatilityModelAlgorithm.cs
index 88cddc852acb..9ecb6ec3a9da 100644
--- a/Algorithm.CSharp/IndicatorVolatilityModelAlgorithm.cs
+++ b/Algorithm.CSharp/IndicatorVolatilityModelAlgorithm.cs
@@ -128,7 +128,7 @@ private IIndicator UpdateIndicator(Security security, TradeBar bar)
///
/// This is used by the regression test system to indicate which languages this algorithm is written in.
///
- public List Languages { get; } = new() { Language.CSharp };
+ public List Languages { get; } = new() { Language.CSharp, Language.Python };
///
/// Data Points count of all timeslices of algorithm
diff --git a/Algorithm.Python/IndicatorVolatilityModelAlgorithm.py b/Algorithm.Python/IndicatorVolatilityModelAlgorithm.py
new file mode 100644
index 000000000000..3c1529f926b7
--- /dev/null
+++ b/Algorithm.Python/IndicatorVolatilityModelAlgorithm.py
@@ -0,0 +1,85 @@
+# 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 *
+
+###
+### Algorithm illustrating the usage of the IndicatorVolatilityModel and
+### how to handle splits and dividends to avoid price discontinuities
+###
+class IndicatorVolatilityModelAlgorithm(QCAlgorithm):
+
+ _indicator_periods = 7
+
+ _data_normalization_mode = DataNormalizationMode.RAW
+
+ def initialize(self):
+ self.set_start_date(2014, 1, 1)
+ self.set_end_date(2014, 12, 31)
+ self.set_cash(100000)
+
+ equity = self.add_equity("AAPL", Resolution.DAILY, data_normalization_mode=self._data_normalization_mode)
+ self._aapl = equity.symbol
+
+ std = StandardDeviation(self._indicator_periods)
+ mean = SimpleMovingAverage(self._indicator_periods)
+ self._indicator = IndicatorExtensions.over(std, mean)
+
+ def update_indicator(security, data, indicator):
+ if data.price > 0:
+ std.update(data.time, data.price)
+ mean.update(data.time, data.price)
+
+ self._volatility_model = IndicatorVolatilityModel(self._indicator, update_indicator)
+ equity.set_volatility_model(self._volatility_model)
+
+ self._splits_and_dividends_count = 0
+ self._volatility_checked = False
+
+ def on_data(self, slice):
+ if slice.splits.contains_key(self._aapl) or slice.dividends.contains_key(self._aapl):
+ self._splits_and_dividends_count += 1
+
+ # On a split or dividend event, we need to reset and warm the indicator up as Lean does to BaseVolatilityModel's
+ # to avoid big jumps in volatility due to price discontinuities
+ self._indicator.reset()
+ equity = self.securities[self._aapl]
+ VolatilityModelExtensions.warm_up(
+ self._volatility_model,
+ self,
+ equity,
+ equity.resolution,
+ self._indicator_periods,
+ self._data_normalization_mode
+ )
+
+ def on_end_of_day(self, symbol):
+ if symbol != self._aapl or not self._indicator.is_ready:
+ return
+
+ self._volatility_checked = True
+
+ # This is expected only in this case, 0.05 is not a magical number of any kind.
+ # Just making sure we don't get big jumps on volatility
+ volatility = self.securities[self._aapl].volatility_model.volatility
+ if volatility <= 0 or volatility > 0.05:
+ raise RegressionTestException(
+ "Expected volatility to stay less than 0.05 (not big jumps due to price discontinuities on splits and dividends), "
+ f"but got {volatility}")
+
+ def on_end_of_algorithm(self):
+ if self._splits_and_dividends_count == 0:
+ raise RegressionTestException("Expected to get at least one split or dividend event")
+
+ if not self._volatility_checked:
+ raise RegressionTestException("Expected to check volatility at least once")