Print First Shelley Blocks
===================================

This example prints the first 14 blocks of the Shelley era: ::

    import ogmios

    NETWORK = "preprod"

    if NETWORK == "mainnet":
        last_byron_block = ogmios.Point(
            slot=4492799, id="f8084c61b6a238acec985b59310b6ecec49c0ab8352249afd7268da5cff2a457"
        )
    elif NETWORK == "preprod":
        last_byron_block = ogmios.Point(
            slot=84242, id="45899e8002b27df291e09188bfe3aeb5397ac03546a7d0ead93aa2500860f1af"
        )
    else:
        print("Invalid network. Please set NETWORK to 'mainnet' or 'preprod'.")
        exit(1)


    with ogmios.Client() as client:
        # Set chain pointer to origin
        try:
            point, tip, id = client.find_intersection.execute([last_byron_block])
        except ogmios.ResponseError:
            print("Intersection not found. Make sure you're connected to the proper network.")
            return

        blocks_printed = 0
        while True:
            direction, tip, point, id = client.next_block.execute()
            if direction.value == "forward":
                blocks_printed += 1
                print(f"Shelley block #{blocks_printed}: {point}")
                if blocks_printed >= 14:
                    break

Example output:

.. image:: ../_static/first_shelley_blocks.png

`Open this example on GitLab <https://gitlab.com/viperscience/ogmios-python/-/blob/main/examples/print_first_shelley_blocks.py>`_