use 'python -u' to run python scripts

(cherry picked from commit a5dc0d506670e32a51075b32eee89bd790871f79)

diff --git a/bin/tests/system/start.pl b/bin/tests/system/start.pl
index cc4dc8bde03baafd8600e5ef6f1abd53c123e7da..e32f8ce2fb66026b1374be09e125f5fa94ce5f0d 100644 (file)
--- a/bin/tests/system/start.pl
+++ b/bin/tests/system/start.pl
@@ -235,7 +235,7 @@ sub start_server {
        } elsif ($server =~ /^ans/) {
                $cleanup_files = "{ans.run}";
                 if (-e "$testdir/$server/ans.py") {
-                        $command = "$PYTHON ans.py 10.53.0.$' 5300";
+                        $command = "$PYTHON -u ans.py 10.53.0.$' 5300";
                 } elsif (-e "$testdir/$server/ans.pl") {
                         $command = "$PERL ans.pl";
                 } else {