Fix lint errors

tests/test_send_page.py

@@ -1,12 +1,15 @@
 #!/usr/bin/env python3
 
+"""Tests for app/send_page.py"""
+
 from app.send_page import send_page
 
 
 def test_send_page_no_env() -> None:
+    """Ensure the API returns an error if no API key specified."""
     result = send_page(
         name='Unit Test',
         email='none@none.com',
         message='Unit Test'
     )
-    assert result[0] == False and result[1].get('token') == 'invalid'
+    assert not result[0] and result[1].get('token') == 'invalid'