Minor formatting

tutor/utils.py

@@ -96,6 +96,7 @@ def kubectl(*command):
         )
     return execute("kubectl", *command)
 
+
 def is_a_tty():
     """
     Return True if stdin is able to allocate a tty. Tty allocation sometimes cannot be
@@ -103,6 +104,7 @@ def is_a_tty():
     """
     return os.isatty(sys.stdin.fileno())
 
+
 def execute(*command):
     click.echo(fmt.command(" ".join(command)))
     with subprocess.Popen(command) as p: