[Unitary-Hack][Sub-Braket] Doc string in submission/braket.py

src/bloqade/submission/braket.py

@@ -1,3 +1,6 @@
+"""Module for `BraketBackend` which represents the functionalities
+needed for executing programs on Braket backend"""
+
 import warnings
 from bloqade.submission.base import SubmissionBackend
 from bloqade.submission.ir.braket import (
@@ -19,11 +22,23 @@
 
 
 class BraketBackend(SubmissionBackend):
+    """Class representing the functionalities needed for executing
+    programs on Braket backend.
+
+    Attributes:
+        device_arn (str): AWS arn for quantum program execution.
+            Defaults to `"arn:aws:braket:us-east-1::device/qpu/quera/Aquila"`
+    """
+
     device_arn: str = "arn:aws:braket:us-east-1::device/qpu/quera/Aquila"
     _device: Optional[AwsDevice] = PrivateAttr(default=None)
 
     @property
     def device(self) -> AwsDevice:
+        """`AwsDevice`: Amazon Braket implementation of a device. Use this class to
+        retrieve the latest metadata about the device and to run a quantum task
+        on the device.
+        """
         if self._device is None:
             self._device = AwsDevice(self.device_arn)
             user_agent = f"Bloqade/{bloqade.__version__}"
@@ -32,6 +47,16 @@ def device(self) -> AwsDevice:
         return self._device
 
     def get_capabilities(self, use_experimental: bool = False) -> QuEraCapabilities:
+        """Get the capabilities of the QuEra backend.
+
+        Args:
+            use_experimental (bool): Whether to use experimental capabilities of
+                the backend system. Defaults to `False`.
+
+        Returns:
+            capabilities (`QuEraCapabilities`): capabilities
+                of the selected QuEra backend.
+        """
         from botocore.exceptions import BotoCoreError, ClientError
 
         if use_experimental:
@@ -53,20 +78,74 @@ def get_capabilities(self, use_experimental: bool = False) -> QuEraCapabilities:
         return super().get_capabilities()
 
     def submit_task(self, task_ir: QuEraTaskSpecification) -> str:
+        """Submit the task to the Braket backend. It converts task
+        IR of the QuEra system to suitable format
+        accepted by Braket.
+
+        Args:
+            task_ir (QuEraTaskSpecification): task IR suitable for QuEra backend.
+                It will be converted to appropriate IR accepted by Braket backend.
+
+        Returns:
+            task_id (str): Task id as a result of executing
+                IR on the Braket backend.
+        """
         shots, ahs_program = to_braket_task(task_ir)
         task = self.device.run(ahs_program, shots=shots)
         return task.id
 
     def task_results(self, task_id: str) -> QuEraTaskResults:
+        """Get the result of a task previously submitted by using the
+        task id of Braket backend.
+
+        Args:
+            task_id (str): task id after executing program on the Braket backend.
+
+        Returns:
+            task_result (`QuEraTaskResults`): Gets the task result a task
+                previously submitted using task id of the Braket backend.
+
+        Note:
+            This is a blocking call, meaning the function will not
+                return till the task has stopped.
+        """
         return from_braket_task_results(AwsQuantumTask(task_id).result())
 
     def cancel_task(self, task_id: str) -> None:
+        """Cancels a task previously submitted to the Braket backend.
+
+        Args:
+            task_id (str): task id after executing program on the Bracket backend.
+        """
         AwsQuantumTask(task_id).cancel()
 
     def task_status(self, task_id: str) -> QuEraTaskStatusCode:
+        """Get the status of a task previously submitted by using
+        the task id of Braket backend.
+
+        Args:
+            task_id (str): task id after executing program on the Braket backend.
+
+        Returns:
+            status_code (QuEraTaskStatusCode): Task status by using the task id
+                of of a task previously submitted to the Braket backend.
+        """
         return from_braket_status_codes(AwsQuantumTask(task_id).state())
 
     def validate_task(self, task_ir: QuEraTaskSpecification):
+        """Validates the task submitted to the QuEra backend.
+
+        Args:
+            task_ir (QuEraTaskSpecification): task IR suitable for
+                QuEra backend. It will be converted to appropriate
+                IR accepted by Braket backend.
+
+        Raises:
+            ValidationError: For tasks that fail validation.
+
+        Note:
+            Currently, it's a no-op.
+        """
         pass
 
     # def validate_task(self, task_ir: QuEraTaskSpecification):