commit ce578831a4e573eac422a488930100bc5380f227
author Hakan Çelik <hakancelik96@outlook.com> Sat Apr 18 19:17:19 2020 +0300
committer GitHub <noreply@github.com> Sat Apr 18 17:17:19 2020 +0100
tree 36941dee90039657430686babe68c52e4b46e672
parent 2b5603140c09766a7d4e8243a70d7144f684f6f9

Add spaces around the ":=" operator in ast_unparse.c (GH-19568)

Lib/test/test_future.py

diff --git a/Lib/test/test_future.py b/Lib/test/test_future.py
index 0522003..fdca231 100644
--- a/Lib/test/test_future.py
+++ b/Lib/test/test_future.py
@@ -296,8 +296,8 @@
         eq('f((x for x in a), 2)')
         eq('(((a)))', 'a')
         eq('(((a, b)))', '(a, b)')
-        eq("(x:=10)")
-        eq("f'{(x:=10):=10}'")
+        eq("(x := 10)")
+        eq("f'{(x := 10):=10}'")
         eq("1 + 2 + 3")
 
     def test_fstring_debug_annotations(self):

Python/ast_unparse.c

diff --git a/Python/ast_unparse.c b/Python/ast_unparse.c
index 443e712..d1e9d42 100644
--- a/Python/ast_unparse.c
+++ b/Python/ast_unparse.c
@@ -829,7 +829,7 @@
 {
     APPEND_STR_IF(level > PR_TUPLE, "(");
     APPEND_EXPR(e->v.NamedExpr.target, PR_ATOM);
-    APPEND_STR(":=");
+    APPEND_STR(" := ");
     APPEND_EXPR(e->v.NamedExpr.value, PR_ATOM);
     APPEND_STR_IF(level > PR_TUPLE, ")");
     return 0;