我有這樣的代碼IPython的代碼:拉ipywidget值手動
import ipywidgets as widgets
from IPython.display import display
import time
w = widgets.Dropdown(
options=['Addition', 'Multiplication', 'Subtraction'],
value='Addition',
description='Task:',
)
def on_change(change):
print("changed to %s" % change['new'])
w.observe(on_change)
display(w)
它按預期工作。當小部件的值發生變化時,觸發on_change
函數。但是,我想運行一個長計算並定期檢查小部件的更新。例如:
for i in range(100):
time.sleep(1)
# pull for changes to w here.
# if w.has_changed:
# print(w.value)
我該如何做到這一點?
謝謝指着我在正確的方向。我會試試看! – hanno