#下载http://www.placekitten.com上的猫咪照片，大小可以通过easy gui的multenterbox进行指定，并通过diropenbox改变存储路径

import easygui as g
import urllib.request
import os.path

def main():
    msg = '请选择图片尺寸'
    title = '下载一只猫'

    catsize = ['宽','高']

    size = []

    size = g.multenterbox(msg,title,catsize)

    if len(size) == 0:
        url = 'http://www.placekitten.com/400/600'
        size[0] = 400
        size[1] = 600
    else:
        url = ('http://www.placekitten.com/%s/%s'%(size[0],size[1]))


    req = urllib.request.Request(url)

    response = urllib.request.urlopen(req)

    cat_img = response.read()

    path = g.diropenbox(msg = '请选择一个文件夹',title = '浏览文件夹')

    os.chdir(path)

    with open('cat_%s_%s.jpg'%(size[0],size[1]),'wb') as f:
        f.write(cat_img)

if __name__ == '__main__':
    main()