Add option to hide advice

Useful for repos that have their lint scripts all under one command

squeaky/__init__.py

@@ -59,6 +59,7 @@ def squeaky_cli():
     """
     switches, filepaths = parse_args(sys.argv)
     check = "--check" in switches
+    no_advice = "--no-advice" in switches
 
     num_unclean = 0
     for path in filepaths:
@@ -77,11 +78,12 @@ def squeaky_cli():
     if num_unclean > 0:
         print("━" * 35)
         if check:
-            print(
-                f"Problems in {num_unclean} notebook"
-                f"{'s' if num_unclean != 1 else ''}; to fix, run"
-                "\n\n  squeaky path/to/notebook.ipynb\n"
-            )
+            if not no_advice:
+                print(
+                    f"Problems in {num_unclean} notebook"
+                    f"{'s' if num_unclean != 1 else ''}; to fix, run"
+                    "\n\n  squeaky path/to/notebook.ipynb\n"
+                )
             sys.exit(2)
         print(f"Modified {num_unclean} notebook{'s' if num_unclean != 1 else ''}")
         print("━" * 35)

test/test.py

@@ -58,6 +58,20 @@ def test_command_modifies(self):
             )
         examples.reset()
 
+    @patch("sys.stdout", new_callable=StringIO)
+    @patch(
+        "sys.argv",
+        ["squeaky", str(examples.dirty_tempfile_path), "--check", "--no-advice"],
+    )
+    def test_no_advice_flag_works(self, mock_stdout):
+        with self.assertRaises(SystemExit) as context:
+            squeaky_cli()
+        self.assertEqual(
+            mock_stdout.getvalue().strip().split("\n")[-1],
+            "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━",
+        )
+        examples.reset()
+
 
 if __name__ == "__main__":
     unittest.main(buffer=True)