简介

我正试图在Jupyter笔记本中使用ipywidgets制作一个用于分类图像的小工具，但我在对齐类和图像时遇到了一些问题。你对如何解决这个问题有什么建议吗。

我做了什么

import ipywidgets as widgets
from IPython.display import display
import glob
# My images
image_paths = glob.glob("./images/*.png")
# Display image
def display_image(path):    
file = open(path, "rb")
image = file.read()
return widgets.Image(
value=image,
format='png',
width=700,
height=700,
)
# Dropdown
def create_dropdown():
return widgets.Dropdown(
options=["1","2","3","4","5","6","7","8","9","10"],
value='5',
description='Category:',
disabled=False
)
# Creating widgets
input_dropdown = create_dropdown()
button = widgets.Button(description="Submit")
output_image = widgets.Image()
output_image.value = display_image(image_paths[-1]).value
# Define function to bind value of the input to the output variable 
def bind_input_to_output(sender):
image_path = image_paths[-1]
image_score = input_dropdown.value
next_image_path = image_paths.pop()
print(image_score, image_path)
output_image.value = display_image(next_image_path).value

# Tell the text input widget to call bind_input_to_output() on submit
button.on_click(bind_input_to_output)
# Displaying widgets
display(output_image, input_dropdown, button)

结果

通过上面的代码，我最终对即将发布的图片进行了分类，但我真的不明白为什么。我第一次按下按钮时，小部件似乎不会更新图像。