example_utils.py 文件源码

def __init__(self, base_url='https://hydro1.gesdisc.eosdis.nasa.gov/data/NLDAS/', **layout_kwargs):
        self.base_url = base_url
        self.selected_url = None
        if 'min_width' not in layout_kwargs:
            layout_kwargs['min_width'] = '30%'
        self.label_layout = Layout(**layout_kwargs)

        dd = widgets.Select(
            options=self.get_links(
                base_url,
                href_filter=self.dir_and_not_data,
            ),
            description='', #urlparse(base_url).path,
        )

        dd.observe(partial(self.on_value_change, url=self.base_url), names='value')
        lbl = widgets.Label(urlparse(self.base_url).path, layout=self.label_layout)
        hbox = widgets.HBox([lbl, dd])
        self.elts = [hbox, lbl, dd]
        display(hbox)