From 1a547d608a6422b4677e8b690bcfd8467b97c219 Mon Sep 17 00:00:00 2001
From: sobolevn <mail@sobolevn.me>
Date: Thu, 27 Jan 2022 13:30:39 +0300
Subject: [PATCH 1/2] bpo-46564: do not leak `x` and `uspace` in `textwrap`

---
 Lib/textwrap.py                                                 | 1 +
 .../next/Library/2022-01-27-13-30-02.bpo-46544.oFDVWj.rst       | 2 ++
 2 files changed, 3 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Library/2022-01-27-13-30-02.bpo-46544.oFDVWj.rst

diff --git a/Lib/textwrap.py b/Lib/textwrap.py
index 841de9baecf5d8..bd1af9e1d9d75a 100644
--- a/Lib/textwrap.py
+++ b/Lib/textwrap.py
@@ -67,6 +67,7 @@ class TextWrapper:
     uspace = ord(' ')
     for x in _whitespace:
         unicode_whitespace_trans[ord(x)] = uspace
+    del x, uspace
 
     # This funky little regex is just the trick for splitting
     # text up into word-wrappable chunks.  E.g.
diff --git a/Misc/NEWS.d/next/Library/2022-01-27-13-30-02.bpo-46544.oFDVWj.rst b/Misc/NEWS.d/next/Library/2022-01-27-13-30-02.bpo-46544.oFDVWj.rst
new file mode 100644
index 00000000000000..63b47e55f1b180
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-01-27-13-30-02.bpo-46544.oFDVWj.rst
@@ -0,0 +1,2 @@
+Don't leak ``x`` & ``uspace`` intermediate vars in
+:class:`textwrap.TextWrapper`.

From 4940bc97f362a57934dfd7fe09885543f91c0737 Mon Sep 17 00:00:00 2001
From: sobolevn <mail@sobolevn.me>
Date: Thu, 27 Jan 2022 14:16:07 +0300
Subject: [PATCH 2/2] Address review

---
 Lib/textwrap.py | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/Lib/textwrap.py b/Lib/textwrap.py
index bd1af9e1d9d75a..98bedd27ea3a11 100644
--- a/Lib/textwrap.py
+++ b/Lib/textwrap.py
@@ -63,11 +63,7 @@ class TextWrapper:
         Append to the last line of truncated text.
     """
 
-    unicode_whitespace_trans = {}
-    uspace = ord(' ')
-    for x in _whitespace:
-        unicode_whitespace_trans[ord(x)] = uspace
-    del x, uspace
+    unicode_whitespace_trans = dict.fromkeys(map(ord, _whitespace), ord(' '))
 
     # This funky little regex is just the trick for splitting
     # text up into word-wrappable chunks.  E.g.