| .. _reference-index: | 
 |  | 
 | ################################# | 
 |   The Python Language Reference | 
 | ################################# | 
 |  | 
 | This reference manual describes the syntax and "core semantics" of the | 
 | language. It is terse, but attempts to be exact and complete. The semantics of | 
 | non-essential built-in object types and of the built-in functions and modules | 
 | are described in :ref:`library-index`. For an informal introduction to the | 
 | language, see :ref:`tutorial-index`. For C or C++ programmers, two additional | 
 | manuals exist: :ref:`extending-index` describes the high-level picture of how to | 
 | write a Python extension module, and the :ref:`c-api-index` describes the | 
 | interfaces available to C/C++ programmers in detail. | 
 |  | 
 | .. toctree:: | 
 |    :maxdepth: 2 | 
 |    :numbered: | 
 |  | 
 |    introduction.rst | 
 |    lexical_analysis.rst | 
 |    datamodel.rst | 
 |    executionmodel.rst | 
 |    import.rst | 
 |    expressions.rst | 
 |    simple_stmts.rst | 
 |    compound_stmts.rst | 
 |    toplevel_components.rst | 
 |    grammar.rst |