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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 disk_partition_usage(all=False):
    '''
    Return a list of disk partitions plus the mount point, filesystem and usage
    statistics.

    CLI Example:

    .. code-block:: bash

        salt '*' ps.disk_partition_usage
    '''
    result = disk_partitions(all)
    for partition in result:
        partition.update(disk_usage(partition['mountpoint']))
    return result