Update Lib/pdb.py, Lib/test/test_pdb.py

buermarc · gaogaotiantian · buermarc · commit 0fae8eb43c7c · 2023-09-14T11:14:36.000+02:00
Co-authored-by: Tian Gao &lt;gaogaotiantian@hotmail.com&gt;
diff --git a/Lib/pdb.py b/Lib/pdb.py
@@ -1753,10 +1753,11 @@ def do_alias(self, arg):
             for alias in keys:
                 self.message("%s = %s" % (alias, self.aliases[alias]))
             return
-        if args[0] in self.aliases and len(args) == 1:
-            self.message("%s = %s" % (args[0], self.aliases[args[0]]))
-        elif len(args) == 1:
-            self.error("Unkown alias. To create an alias see 'help alias'")
+        if len(args) == 1:
+            if args[0] in self.aliases:
+                self.message("%s = %s" % (args[0], self.aliases[args[0]]))
+            else:
+                self.error(f"Unknown alias '{args[0]}'")
         else:
             self.aliases[args[0]] = ' '.join(args[1:])
 
diff --git a/Lib/test/test_pdb.py b/Lib/test/test_pdb.py
@@ -677,7 +677,7 @@ def test_pdb_alias_command():
     > <doctest test.test_pdb.test_pdb_alias_command[1]>(4)test_function()
     -> o.method()
     (Pdb) alias pi
-    *** Unkown alias. To create an alias see 'help alias'
+    *** Unknown alias 'pi'
     (Pdb) alias pi for k in %1.__dict__.keys(): print(f"%1.{k} = {%1.__dict__[k]}")
     (Pdb) alias ps pi self
     (Pdb) alias ps
