From a7d24b2ad570fdd4c03590bd775f009af2d23e40 Mon Sep 17 00:00:00 2001
From: Victor Stinner <vstinner@python.org>
Date: Tue, 23 Mar 2021 00:00:03 +0100
Subject: [PATCH] bpo-41718: importlib no longer imports warnings at startup

The importlib module no longer imports warnings at startup, but only
imports it when a deprecated function is called.
---
 Lib/importlib/__init__.py | 3 +--
 Lib/importlib/util.py     | 4 +++-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/Lib/importlib/__init__.py b/Lib/importlib/__init__.py
index 03ff71489abbd60..657142387dc5378 100644
--- a/Lib/importlib/__init__.py
+++ b/Lib/importlib/__init__.py
@@ -54,8 +54,6 @@
 # Fully bootstrapped at this point, import whatever you like, circular
 # dependencies and startup overhead minimisation permitting :)
 
-import warnings
-
 
 # Public API #########################################################
 
@@ -78,6 +76,7 @@ def find_loader(name, path=None):
     This function is deprecated in favor of importlib.util.find_spec().
 
     """
+    import warnings
     warnings.warn('Deprecated since Python 3.4. '
                   'Use importlib.util.find_spec() instead.',
                   DeprecationWarning, stacklevel=2)
diff --git a/Lib/importlib/util.py b/Lib/importlib/util.py
index 98a0fa54dfd873e..e36ec32838ffc0d 100644
--- a/Lib/importlib/util.py
+++ b/Lib/importlib/util.py
@@ -16,7 +16,6 @@
 import functools
 import sys
 import types
-import warnings
 
 
 def source_hash(source_bytes):
@@ -149,6 +148,7 @@ def set_package(fxn):
     """
     @functools.wraps(fxn)
     def set_package_wrapper(*args, **kwargs):
+        import warnings
         warnings.warn('The import system now takes care of this automatically.',
                       DeprecationWarning, stacklevel=2)
         module = fxn(*args, **kwargs)
@@ -168,6 +168,7 @@ def set_loader(fxn):
     """
     @functools.wraps(fxn)
     def set_loader_wrapper(self, *args, **kwargs):
+        import warnings
         warnings.warn('The import system now takes care of this automatically.',
                       DeprecationWarning, stacklevel=2)
         module = fxn(self, *args, **kwargs)
@@ -195,6 +196,7 @@ def module_for_loader(fxn):
     the second argument.
 
     """
+    import warnings
     warnings.warn('The import system now takes care of this automatically.',
                   DeprecationWarning, stacklevel=2)
     @functools.wraps(fxn)