util.py 文件源码

def paged_echo():
    """
    Unfortunately, to use .echo_via_pager() in Click, you have to feed
    it all of the lines at once.

    This returns a context-manager that lets you incrementally call
    '.echo' (same as 'click.echo') incrementally, only outputting (to
    the pager) when the context closes.
    """
    return _PagedEcho()