Add note to tutorial clarifying scope

Doc/tutorial/index.rst

@@ -4,6 +4,10 @@
   The Python Tutorial
 ######################
 
+.. Tip:: This tutorial is designed for
+   *programmers* that are new to the Python language,
+   **not** *beginners* who are new to programming.
+
 Python is an easy to learn, powerful programming language. It has efficient
 high-level data structures and a simple but effective approach to
 object-oriented programming. Python's elegant syntax and dynamic typing,
@@ -21,7 +25,8 @@ implemented in C or C++ (or other languages callable from C). Python is also
 suitable as an extension language for customizable applications.
 
 This tutorial introduces the reader informally to the basic concepts and
-features of the Python language and system. It helps to have a Python
+features of the Python language and system. Be aware that it expects you to
+have a basic understanding of programming in general. It helps to have a Python
 interpreter handy for hands-on experience, but all examples are self-contained,
 so the tutorial can be read off-line as well.