Info Node: (python2.1-api.info)Concrete Objects Layer
(python2.1-api.info)Concrete Objects Layer
Concrete Objects Layer
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The functions in this chapter are specific to certain Python object
types. Passing them an object of the wrong type is not a good idea; if
you receive an object from a Python program and you are not sure that
it has the right type, you must perform a type check first; for
example, to check that an object is a dictionary, use `PyDict_Check()'.
The chapter is structured like the "family tree" of Python object
types.
*Warning:* While the functions described in this chapter carefully
check the type of the objects which are passed in, many of them do not
check for `NULL' being passed instead of a valid object. Allowing
`NULL' to be passed in can cause memory access violations and immediate
termination of the interpreter.