calc.py 文件源码

def __init__(self):
        self.columns = urwid.Columns([HelpColumn(), CellColumn("A")], 1)
        self.col_list = self.columns.widget_list
        self.columns.set_focus_column( 1 )
        view = urwid.AttrWrap(self.columns, 'body')
        self.view = urwid.Frame(view) # for showing messages
        self.col_link = {}