.. highlightlang:: c
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.. _concrete:
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**********************
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Concrete Objects Layer
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**********************
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The functions in this chapter are specific to certain Python object types.
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Passing them an object of the wrong type is not a good idea; if you receive an
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object from a Python program and you are not sure that it has the right type,
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you must perform a type check first; for example, to check that an object is a
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dictionary, use :c:func:`PyDict_Check`. The chapter is structured like the
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"family tree" of Python object types.
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.. warning::
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While the functions described in this chapter carefully check the type of the
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objects which are passed in, many of them do not check for *NULL* being passed
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instead of a valid object. Allowing *NULL* to be passed in can cause memory
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access violations and immediate termination of the interpreter.
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.. _fundamental:
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Fundamental Objects
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===================
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This section describes Python type objects and the singleton object ``None``.
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.. toctree::
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type.rst
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none.rst
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.. _numericobjects:
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Numeric Objects
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===============
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.. index:: object: numeric
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.. toctree::
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int.rst
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bool.rst
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long.rst
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float.rst
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complex.rst
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.. _sequenceobjects:
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Sequence Objects
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================
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.. index:: object: sequence
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Generic operations on sequence objects were discussed in the previous chapter;
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this section deals with the specific kinds of sequence objects that are
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intrinsic to the Python language.
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.. toctree::
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bytearray.rst
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string.rst
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unicode.rst
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buffer.rst
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tuple.rst
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list.rst
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.. _mapobjects:
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Mapping Objects
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===============
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.. index:: object: mapping
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.. toctree::
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dict.rst
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.. _otherobjects:
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Other Objects
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=============
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.. toctree::
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class.rst
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function.rst
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method.rst
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file.rst
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module.rst
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iterator.rst
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descriptor.rst
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slice.rst
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weakref.rst
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capsule.rst
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cobject.rst
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cell.rst
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gen.rst
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datetime.rst
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set.rst
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code.rst
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