In [1]:
from ipywidgets import widgets
from IPython.display import display
from IPython.display import Markdown
txtArea = widgets.Text()
display(txtArea)
myb= widgets.Button(description="234")
def add_text(b):
print("hello")
b.description=b.description+"1"
txtArea.value = txtArea.value + txtArea.value
myb.on_click(add_text)
display(myb)