[3.11] gh-84522: Add for-loop to apply-method-to-sequence FAQ (GH-94660)

Doc/faq/programming.rst

@@ -1279,13 +1279,25 @@ Or, you can use an extension that provides a matrix datatype; `NumPy
 <https://numpy.org/>`_ is the best known.
 
 
-How do I apply a method to a sequence of objects?
--------------------------------------------------
+How do I apply a method or function to a sequence of objects?
+-------------------------------------------------------------
 
-Use a list comprehension::
+To call a method or function and accumulate the return values is a list,
+a :term:`list comprehension` is an elegant solution::
 
    result = [obj.method() for obj in mylist]
 
+   result = [function(obj) for obj in mylist]
+
+To just run the method or function without saving the return values,
+a plain :keyword:`for` loop will suffice::
+
+   for obj in mylist:
+       obj.method()
+
+   for obj in mylist:
+       function(obj)
+
 .. _faq-augmented-assignment-tuple-error:
 
 Why does a_tuple[i] += ['item'] raise an exception when the addition works?