explorer.py 文件源码

def __init__(self, initial_value='', default=''):
        if initial_value == '':
            try:
                initial_value = iris.sample_data_path('')
            except ValueError:
                initial_value = ''
        # Define the file system path for input files.
        self._path = ipywidgets.Text(
            description='Path:',
            value=initial_value,
            width="100%")
        # Observe the path.
        self._path.observe(self._handle_path, names='value')
        # Use default path value to initialise file options.
        options = []
        if os.path.exists(self._path.value):
            options = glob.glob('{}/*'.format(self._path.value))
            options.sort()
        default_list = []
        for default_value in default.split(','):
            if default_value in options:
                default_list.append(default_value)
        default_tuple = tuple(default_list)

        # Defines the files selected to be loaded.
        self._files = ipywidgets.SelectMultiple(
            description='Files:',
            options=OrderedDict([(os.path.basename(f), f)
                                 for f in options]),
            value=default_tuple,
            width="100%"
        )
        self.deleter = ipywidgets.Button(description='delete tab',
                                         height='32px', width='75px')
        hbox = ipywidgets.HBox(children=[self._files, self.deleter])
        self._box = ipywidgets.Box(children=[self._path, hbox], width="100%")