【源码】PyObject_VAR_HEAD 定长对象变长对象

PyObject_VAR_HEAD

Python-3.7.4\Include\object.h

/* PyObject_VAR_HEAD defines the initial segment of all variable-size

* container objects. These end with a declaration of an array with 1

* element, but enough space is malloc'ed so that the array actually

* has room for ob_size elements. Note that ob_size is an element count,

* not necessarily a byte count.

#define PyObject_VAR_HEAD PyVarObject ob_base;

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