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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 is_fuse_exec(cmd):
    '''
    Returns true if the command passed is a fuse mountable application.

    CLI Example:

    .. code-block:: bash

        salt '*' mount.is_fuse_exec sshfs
    '''
    cmd_path = salt.utils.path.which(cmd)

    # No point in running ldd on a command that doesn't exist
    if not cmd_path:
        return False
    elif not salt.utils.path.which('ldd'):
        raise CommandNotFoundError('ldd')

    out = __salt__['cmd.run']('ldd {0}'.format(cmd_path), python_shell=False)
    return 'libfuse' in out