Python/c api provides related functions to create Python tuples

If you provide the PyTuple_New () function in Python/c api, use it to create Python tuples. In this case, the PyTuple_New () function is used to return the created tuples. The prototype of functions related to Python/c apis is as follows.

PyObject * PyTuple_New (Py_ssize_t len)

The parameter meanings are as follows.

Len: the length of the created tuples.

After the tuples are created, you can use the PyTuple_SetItem () function to add items to the tuples. The function prototype is as follows.

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Int PyTuple_SetItem (PyObject * p, Py_ssize_t pos, PyObject * o)

The parameter meanings are as follows.

P: The operation tuples.

Pos: The Position Index of the added item.

O: the added item value.

You can use the PyTuple_GetItem () function in Python/c api to obtain the value of an item in the tuples. The value of the return item of the PyTuple_GetItem () function. The function prototype is as follows.

PyObject * PyTuple_GetItem (PyObject * p, Py_ssize_t pos)

The parameter meanings are as follows.

P: The tuples to be operated.

Pos: The Position Index of the item.

After the tuples are created, you can use the _ PyTuple_Resize () function to re-adjust the size of the tuples. The function prototype is as follows.

Int _ PyTuple_Resize (PyObject ** p, Py_ssize_t newsize)

The parameter meanings are as follows.

P: pointer to the tuples to be operated.

Newsize: the size of the new element group.