[Python-checkins] bpo-46522: fix concurrent.futures and io AttributeError messages (GH-30887)

[asvetlov]

https://github.com/python/cpython/commit/9b12b1b803d7b73640ab637a74a6f35f3fe9db21
commit: 9b12b1b803d7b73640ab637a74a6f35f3fe9db21
branch: main
author: Thomas Grainger <tagrain at gmail.com>
committer: asvetlov <andrew.svetlov at gmail.com>
date: 2022-02-23T02:25:00+02:00
summary:

bpo-46522: fix concurrent.futures and io AttributeError messages (GH-30887)

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Andrew Svetlov <andrew.svetlov at gmail.com>

files:
A Misc/NEWS.d/next/Library/2022-01-25-15-31-04.bpo-46522.tYAlX4.rst
M Lib/_pyio.py
M Lib/concurrent/futures/__init__.py
M Lib/io.py

diff --git a/Lib/_pyio.py b/Lib/_pyio.py
index d7119742b9d22..8f20c5ed2abd5 100644
--- a/Lib/_pyio.py
+++ b/Lib/_pyio.py
@@ -312,7 +312,7 @@ def __getattr__(name):
         global OpenWrapper
         OpenWrapper = open
         return OpenWrapper
-    raise AttributeError(name)
+    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
 
 
 # In normal operation, both `UnsupportedOperation`s should be bound to the
diff --git a/Lib/concurrent/futures/__init__.py b/Lib/concurrent/futures/__init__.py
index d746aeac50a99..292e886d5a88a 100644
--- a/Lib/concurrent/futures/__init__.py
+++ b/Lib/concurrent/futures/__init__.py
@@ -50,4 +50,4 @@ def __getattr__(name):
         ThreadPoolExecutor = te
         return te
 
-    raise AttributeError(f"module {__name__} has no attribute {name}")
+    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
diff --git a/Lib/io.py b/Lib/io.py
index 2a6140c3dd509..a205e00575f7e 100644
--- a/Lib/io.py
+++ b/Lib/io.py
@@ -70,7 +70,7 @@ def __getattr__(name):
         global OpenWrapper
         OpenWrapper = open
         return OpenWrapper
-    raise AttributeError(name)
+    raise AttributeError("module {__name__!r} has no attribute {name!r}")
 
 
 # Pretend this exception was created here.
diff --git a/Misc/NEWS.d/next/Library/2022-01-25-15-31-04.bpo-46522.tYAlX4.rst b/Misc/NEWS.d/next/Library/2022-01-25-15-31-04.bpo-46522.tYAlX4.rst
new file mode 100644
index 0000000000000..999863adb9b31
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-01-25-15-31-04.bpo-46522.tYAlX4.rst
@@ -0,0 +1 @@
+Make various module ``__getattr__`` AttributeErrors more closely match a typical AttributeError