Improve display of hint about --fulltrace with KeyboardInterrupt

- display the location first
- display hint about --fulltrace in parenthesis

changelog/3545.trivial.rst

@@ -0,0 +1 @@
+Improve display of hint about --fulltrace with KeyboardInterrupt

src/_pytest/terminal.py

@@ -617,11 +617,11 @@ class TerminalReporter(object):
             if self.config.option.fulltrace:
                 excrepr.toterminal(self._tw)
             else:
+                excrepr.reprcrash.toterminal(self._tw)
                 self._tw.line(
-                    "to show a full traceback on KeyboardInterrupt use --fulltrace",
+                    "(to show a full traceback on KeyboardInterrupt use --fulltrace)",
                     yellow=True,
                 )
-                excrepr.reprcrash.toterminal(self._tw)
 
     def _locationline(self, nodeid, fspath, lineno, domain):
 

testing/test_terminal.py

@@ -203,7 +203,7 @@ class TestTerminal(object):
             )
         else:
             result.stdout.fnmatch_lines(
-                ["to show a full traceback on KeyboardInterrupt use --fulltrace"]
+                ["(to show a full traceback on KeyboardInterrupt use --fulltrace)"]
             )
         result.stdout.fnmatch_lines(["*KeyboardInterrupt*"])