Use a better variable name

src/pyramid/scripts/common.py

@@ -17,22 +17,23 @@ def parse_vars(args):
     return result
 
 
-def get_config_loader(config_uri, out=None):
-    """
-    Find a ``plaster.ILoader`` object supporting the "wsgi" protocol.
+def get_config_loader(config_uri, report_failure=None):
+    """Find a ``plaster.ILoader`` object supporting the "wsgi" protocol.
 
-    ``out``, if passed, must be a function of one argument, a string.
-    The function is called with an error message when the ``config_uri``
-    cannot be used to obtain settings.  After ``out`` is called the
-    program exits with a ``1`` (failure) status code.
+    ``report_failure``, if passed, must be a function of one argument,
+    a string.  The function is called with an error message when the
+    ``config_uri`` cannot be used to obtain settings.  After
+    ``report_failure`` is called the program exits with a ``1``
+    (failure) status code.
 
-    When ``out`` is not passed, or is None, the caller is expected
+    When ``report_failure`` is not passed, or is None, the caller is expected
     to handle PlasterError exceptions raised by :term:`plaster`.
+
     """
     try:
         return plaster.get_loader(config_uri, protocols=['wsgi'])
     except plaster.exceptions.PlasterError as e:
-        if not out:
+        if not report_failure:
             raise e
-        out(f'The settings given are not available: {e}')
+        report_failure(f'The settings given are not available: {e}')
         sys.exit(1)