Use more explicit print()

Author: SnoopJ

Lib/test/test_pdb.py

@@ -1810,12 +1810,12 @@ def test_pdb_issue_gh_104301():
     ... ]):
     ...     n = -1
     ...     import pdb; pdb.Pdb(nosigint=True, readrc=False).set_trace()
-    ...     print(n)
+    ...     print(f"The value of n is {n}")
     > <doctest test.test_pdb.test_pdb_issue_gh_104301[0]>(8)<module>()
-    -> print(n)
+    -> print(f"The value of n is {n}")
     (Pdb) ! n = 42
     (Pdb) n
-    42
+    The value of n is 42
     > <doctest test.test_pdb.test_pdb_issue_gh_104301[0]>(1)<module>()
     -> with PdbTestInput([
     (Pdb) continue