ensurepip uses importlib.resources traversable API

Lib/ensurepip/__init__.py

@@ -1,13 +1,10 @@
 import os
 import os.path
 import sys
-import runpy
 import tempfile
 import subprocess
 from importlib import resources
 
-from . import _bundled
-
 
 
 __all__ = ["version", "bootstrap"]
@@ -24,8 +21,8 @@ _PROJECTS = [
 
 
 def _run_pip(args, additional_paths=None):
-    # Run the bootstraping in a subprocess to avoid leaking any state that happens
-    # after pip has executed. Particulary, this avoids the case when pip holds onto
+    # Run the bootstrapping in a subprocess to avoid leaking any state that happens
+    # after pip has executed. Particularly, this avoids the case when pip holds onto
     # the files in *additional_paths*, preventing us to remove them at the end of the
     # invocation.
     code = f"""
@@ -106,12 +103,9 @@ def _bootstrap(*, root=None, upgrade=False, user=False,
         additional_paths = []
         for project, version, py_tag in _PROJECTS:
             wheel_name = "{}-{}-{}-none-any.whl".format(project, version, py_tag)
-            whl = resources.read_binary(
-                _bundled,
-                wheel_name,
-            )
+            whl = resources.files("ensurepip") / "_bundled" / wheel_name
             with open(os.path.join(tmpdir, wheel_name), "wb") as fp:
-                fp.write(whl)
+                fp.write(whl.read_bytes())
 
             additional_paths.append(os.path.join(tmpdir, wheel_name))
 

Misc/NEWS.d/next/Library/2020-10-11-20-23-48.bpo-37449.f-t3V6.rst

@@ -0,0 +1 @@
+`ensurepip` now uses `importlib.resources.files()` traversable APIs