Function default_main_program

python/paddle/base/framework.py:8082–8116

This API can be used to get ``default main program`` which store the descriptions of Ops and tensors. For example ``z = paddle.add(x, y)`` will create a new ``add`` Op and a new ``z`` tensor, and they will be recorded in ``default main program`` . The ``default main program``

()

def default_main_program() -> Program:
    """
    This API can be used to get ``default main program`` which store the
    descriptions of Ops and tensors.

    For example ``z = paddle.add(x, y)`` will create a new ``add``
    Op and a new ``z`` tensor, and they will be recorded in ``default main program`` .

    The ``default main program`` is the default value for ``Program`` parameter in
    a lot of APIs. For example, the :code:`Executor.run()` will execute the
    :code:`default_main_program` when the program is not specified.

    If you want to switch the ``default main program``, you can use :ref:`api_paddle_base_framework_program_guard` .

    Returns:
        Program: A ``Program`` which holding the descriptions of OPs and tensors in the network.

    Examples:
        .. code-block:: pycon

            >>> import paddle

            >>> paddle.enable_static()
            >>> # Sample Network:
            >>> x = paddle.static.data(name='x', shape=[100, 100], dtype='float32')
            >>> y = paddle.static.data(name='y', shape=[100, 100], dtype='float32')
            >>> out = paddle.add(x, y)

            >>> # print the number of blocks in the program, 1 in this case
            >>> print(paddle.static.default_main_program().num_blocks)
            1
            >>> # print the default_main_program
            >>> print(paddle.static.default_main_program())
    """
    return _main_program_


def switch_main_program(program: Program) -> Program: