fixed raise with string literals instead of an exception (#736)

Co-authored-by: Stefan J. Wernli <swernli@microsoft.com>

Author: filipw

azure-quantum/azure/quantum/job/job.py

@@ -356,7 +356,7 @@ def _convert_tuples(self, data):
                 # Convert the dictionary to a tuple
                 return tuple(self._convert_tuples(data[f"Item{i+1}"]) for i in range(len(data)))
             else:
-                raise "Malformed tuple output"
+                raise ValueError("Malformed tuple output")
         elif isinstance(data, list):
             # Recursively process list elements
             return [self._convert_tuples(item) for item in data]

azure-quantum/azure/quantum/qiskit/job.py

@@ -237,7 +237,7 @@ def _format_ionq_results(self, sampler_seed=None):
         num_qubits = int(self._azure_job.details.metadata.get("num_qubits"))
 
         if not "histogram" in az_result:
-            raise "Histogram missing from IonQ Job results"
+            raise ValueError("Histogram missing from IonQ Job results")
 
         counts = defaultdict(int)
         probabilities = defaultdict(int)