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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get(self, block_id):
 """API endpoint to get details about a block. Args: block_id (str):
 the id of the block. Return: A JSON string containing the data about the block. """


        pool = current_app.config['bigchain_pool']

        with pool() as bigchain:
            block = bigchain.get_block(block_id=block_id)

        if not block:
            return make_error(404)

        return block