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Description

1. Implement the logic of combining dictionaries to generate new dictionaries, corresponding to the | operator.

Implement dictionary in-place merge logic, corresponding to the | = operator.

2. The implementation logic of CPython is basically the same as that of pure Python, except that the problem of reference counting is related to the garbage collection of objects.

Example

/ / implement the logic of dictionary merging to generate new dictionaries, corresponding to | operator static PyObject * dict_or (PyObject * self, PyObject * other) {if (! PyDict_Check (self) | |! PyDict_Check (other)) {Py_RETURN_NOTIMPLEMENTED;} PyObject * new = PyDict_Copy (self); if (new = = NULL) {return NULL } if (dict_update_arg (new, other)) {Py_DECREF (new); / / reduce reference count return NULL;} return new;} / / implement dictionary in-place merge logic, corresponding to | = operator static PyObject * dict_ior (PyObject * self, PyObject * other) {if (dict_update_arg (self, other)) {return NULL;} Py_INCREF (self) / / increase reference count return self;} the above is about the article "how to merge dictionaries with python interpreter". I believe you all have some understanding. I hope the content shared by the editor will be helpful to you. If you want to know more about it, please follow the industry information channel.

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