Catch warnings in stdlib

Author: XuehaiPan

Lib/site.py

@@ -320,6 +320,7 @@ def joinuser(*args):
 def _get_path(userbase):
     version = sys.version_info
     with warnings.catch_warnings():
+        # ignore DeprecationWarning on sys.abiflags change
         warnings.simplefilter('ignore', DeprecationWarning)
         abiflags = getattr(sys, 'abiflags', '')
     if 't' in abiflags:
@@ -405,6 +406,7 @@ def getsitepackages(prefixes=None):
         implementation = _get_implementation().lower()
         ver = sys.version_info
         with warnings.catch_warnings():
+            # ignore DeprecationWarning on sys.abiflags change
             warnings.simplefilter('ignore', DeprecationWarning)
             abiflags = getattr(sys, 'abiflags', '')
         if 't' in abiflags:

Lib/sysconfig/__init__.py

@@ -335,6 +335,7 @@ def get_makefile_filename():
         return os.path.join(_PROJECT_BASE, "Makefile")
 
     with warnings.catch_warnings():
+        # ignore DeprecationWarning on sys.abiflags change
         warnings.simplefilter('ignore', DeprecationWarning)
         has_abiflags = hasattr(sys, 'abiflags')
 
@@ -511,12 +512,10 @@ def _init_config_vars():
     base_prefix = _BASE_PREFIX
     base_exec_prefix = _BASE_EXEC_PREFIX
 
-    try:
-        with warnings.catch_warnings():
-            warnings.simplefilter('ignore', DeprecationWarning)
-            abiflags = sys.abiflags
-    except AttributeError:
-        abiflags = ''
+    with warnings.catch_warnings():
+        # ignore DeprecationWarning on sys.abiflags change
+        warnings.simplefilter('ignore', DeprecationWarning)
+        abiflags = getattr(sys, 'abiflags', '')
 
     if os.name == 'posix':
         _init_posix(_CONFIG_VARS)

Lib/test/pythoninfo.py

@@ -47,7 +47,13 @@ def get_infos(self):
 
 def copy_attributes(info_add, obj, name_fmt, attributes, *, formatter=None):
     for attr in attributes:
-        value = getattr(obj, attr, None)
+        if attr == 'abiflags':
+            with warnings.catch_warnings():
+                # ignore DeprecationWarning on sys.abiflags change
+                warnings.simplefilter("ignore", DeprecationWarning)
+                value = getattr(obj, attr, None)
+        else:
+            value = getattr(obj, attr, None)
         if value is None:
             continue
         name = name_fmt % attr