fix: move sys import to top-level, drop patch alias in utils

Author: tagaws

src/rpdk/core/data_loaders.py

@@ -3,6 +3,7 @@
 import os
 import re
 import shutil
+import sys
 from io import TextIOWrapper
 from pathlib import Path
 
@@ -41,8 +42,6 @@ def resource_stream(package_name, resource_name, encoding="utf-8"):
     Decoding errors raise :exc:`ValueError`. :term:`universal newlines`
     are enabled. Can be used in a ``with`` statement.
     """
-    import sys
-
     pkg = sys.modules[package_name].__spec__.parent or package_name
     f = importlib_resources_files(pkg).joinpath(resource_name).open("rb")
     return TextIOWrapper(f, encoding=encoding)
@@ -61,8 +60,6 @@ def resource_yaml(package_name, resource_name):
 
 
 def copy_resource(package_name, resource_name, out_path):
-    import sys
-
     pkg = sys.modules[package_name].__spec__.parent or package_name
     with importlib_resources_files(pkg).joinpath(resource_name).open(
         "rb"

tests/utils.py

@@ -4,7 +4,7 @@
 from io import BytesIO
 from pathlib import Path
 from random import sample
-from unittest.mock import Mock, patch, patch as _patch
+from unittest.mock import Mock, patch
 
 from rpdk.core.project import Project
 
@@ -76,7 +76,7 @@ def add_dummy_language_plugin():
     ep = importlib.metadata.EntryPoint(
         name="dummy", value="rpdk.dummy:DummyLanguagePlugin", group="rpdk.v1.languages"
     )
-    _patch(
+    patch(
         "rpdk.core.plugin_registry._iter_entry_points",
         side_effect=lambda group: [ep] if group == "rpdk.v1.languages" else [],
     ).start()