feat: (squash and push to use git hooks) add p2 deprecation for retrieving pytorch img uri

style: format _validate_instance_deprecation using black

doc: add docstring for _validate_instance_deprecation

doc: update deprecation error string

doc: update docstring for _validate_instance_deprecation

Author: Shibo Xing

src/sagemaker/image_uris.py

@@ -232,6 +232,7 @@ def retrieve(
 
     if repo == f"{framework}-inference-graviton":
         container_version = f"{container_version}-sagemaker"
+    _validate_instance_deprecation(framework, instance_type, version)
 
     tag = _get_image_tag(
         container_version,
@@ -365,6 +366,20 @@ def _config_for_framework_and_scope(framework, image_scope, accelerator_type=Non
     return config if "scope" in config else config[image_scope]
 
 
+def _validate_instance_deprecation(framework, instance_type, version):
+    """Check if instance type is deprecated for a certain framework with a certain version"""
+    if (
+        framework == "pytorch"
+        and _get_instance_type_family(instance_type) == "p2"
+        and version >= "1.13"
+    ):
+        raise ValueError(
+            "P2 instances have been deprecated for sagemaker jobs with PyTorch 1.13 and above. "
+            "For information about supported instance types please refer to "
+            "https://aws.amazon.com/sagemaker/pricing/"
+        )
+
+
 def _validate_for_suppported_frameworks_and_instance_type(framework, instace_type):
     """Validate if framework is supported for the instance_type"""
     if (