temp override needs to handle missing data

requirements.txt

@@ -12,3 +12,4 @@ Werkzeug>=2.0.1
 statsmodels==0.14.0
 PyPDF2>=2.5.0
 pyarrow>=14.0.1
+scikit-learn>1.3.0

setup.py

@@ -98,6 +98,7 @@ def dir_this_file():
         "statsmodels==0.14.0",
         "PyPDF2>=2.5.0",
         "pyarrow>=14.0.1",
+        "scikit-learn>1.3.0"
     ],
     tests_require=["nose", "flake8"],
     extras_require=dict(),

sysdata/mongodb/mongo_temporary_override.py

@@ -1,10 +1,13 @@
+from syscore.exceptions import missingData
 from syscore.constants import arg_not_supplied
 
 from sysdata.production.temporary_override import temporaryOverrideData
 from sysdata.mongodb.mongo_override import from_dict_to_override, from_override_to_dict
 from sysobjects.production.override import Override
 from sysdata.mongodb.mongo_generic import mongoDataWithSingleKey
 from syslogging.logger import get_logger
+from sysobjects.production.override import DEFAULT_OVERRIDE
+
 
 TEMPORARY_OVERRIDE_COLLECTION = "temporary_override_collection"
 KEY = "instrument_code"
@@ -27,7 +30,10 @@ def mongo_data(self):
         return self._mongo_data
 
     def get_stored_override_for_instrument(self, instrument_code: str) -> Override:
-        override_as_dict = self.mongo_data.get_result_dict_for_key(instrument_code)
+        try:
+            override_as_dict = self.mongo_data.get_result_dict_for_key(instrument_code)
+        except missingData:
+            return DEFAULT_OVERRIDE
 
         return from_dict_to_override(override_as_dict)