Clarified that TypeErrors can be raised by any

function (not just builtins).

The issue arose in a thread on comp.lang.python.

Doc/lib/libexcs.tex

@@ -322,7 +322,7 @@ Raised when an \keyword{assert} statement fails.
 \end{excdesc}
 
 \begin{excdesc}{TypeError}
-  Raised when a built-in operation or function is applied to an object
+  Raised when an operation or function is applied to an object
   of inappropriate type.  The associated value is a string giving
   details about the type mismatch.
 \end{excdesc}