It's my first program for Pythonista

[mikael]

@Cheng, for paging, how long are your lines?

[Cheng]

@mikael I plan to do less than 50 lines.
Each button is actually a hyperlink that allows browse the web in the widget.That's my idea.

[Cheng]

And another problem is Button.action
The function must take a single sender parameter.
I want different buttons to correspond to different links.

[ccc]

def button_action(sender):
    if sender.title =="Apple":
        url = "https://www.apple.com"
    elif sender.title =="Google":
        url = "https://www.google.com"

[Cheng]

@ccc there’s many links in a file, Function cannot pass variables.

[ccc]

The button (sender) has attributes... Here I used sender.title but you could also add a .url attribute to your buttons...

button1.url = "https://www.apple.com"

[cvp]

@ccc "les grands esprits se rencontrent" 😂, I just wrote

import ui
v = ui.View()
v.frame = (0,0,200,200)
def b_action(sender):
	print(sender.url)
b1 = ui.Button(title='Apple', frame = (10,10,80,32), url='https://www.apple.com', action=b_action)
v.add_subview(b1)
b2 = ui.Button(title='Google', frame = (100,10,80,32), url='https://www.google.com', action=b_action)
v.add_subview(b2)
v.present('sheet')

[Cheng]

@ccc my button url is a variable.

def button_tapped(sender):
	self.webbrowser.open(href) #？？？
v=ui.View(frame=(0,0,300,400))
with open('./wb.json', 'r') as f:
	wb = f.readlines()
	for i in range(0,20):
		wbi = wb[i]
		title = json.loads(wbi)['title']
		href = json.loads(wbi)['href']  #href is the button url
		button = ui.Button(title=title)
		button.action = button_tapped 
		button.frame = (0,i*25,450,20)
		v.add_subview(button)

I think I need 20 button.tapped functions.

[ccc]

Do you use GitHub? A repo with more complete code would help a lot. You definitely do not need 20 actions.

[cvp]

@Cheng I'm sure @ccc will answer in one minute, thus...😀

[cvp]

@Cheng when you create your buttons, set

button.href = href

and you want to use it, in action, do

.......open(sender.href)

[Cheng]

I’ll try.
Thank you @ccc and thank @cvp .
Also thanks to Google Translate.😅

[cvp]

@Cheng Sorry for the French sentence, it was only a joke for @ccc

[ccc]

You can write your data to a .json file and then read it back into a dict...

#!/usr/bin/env python3

import json

data = {
    "Apple": "https://www.apple.com",
    "Google": "https://www.google.com",
    "IBM": "https://www.ibm.com",
}

with open("buttons.json", "w") as out_file:
    json.dump(data, out_file)

del data  # remove the in-memory instance

with open("buttons.json") as in_file:
    data = json.load(in_file)

for i, (title, url) in enumerate(data.items()):
    print(i, title, url)

[Cheng]

I almost finished my code.
But still have a problem
When I tapped button0 TAP ,button0 does not disappear as sender.title = ‘ ‘, and the new button has displayed.
And how to use remove_subview(button0)?

import requests
import re
import json
import ui, appex
import webbrowser

headers={
	'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36'
}
data = {
	'cate':'realtimehot'
}


def get_page(url):
	response = requests.get(url)
	html = response.text
	#print(html)
	return html


def parse_html(html):
	#top = re.findall(r'class="icon-top"></i></td>.*?<td class="td-02">.*?<a href="(.*?)" target="_blank">(.*?)</a>.*?</td>', html, re.S)
	data = re.findall(r'ranktop">(.*?)</td>.*?<a href="(.*?)" target="_blank">(.*?)</a>.*?<span>(.*?)</span>', html, re.S)
	#print(top)
	#print(data)
	return data


def write_data(data):
	with open(r'./wb.json', 'w', encoding='gbk') as f:
		for i in data:
			f.writelines(json.dumps(i) + '\n')
	print('done')
	

def get_json(items, host):
	for item in items:
		yield {
			'rank': item[0],
			'href': host + item[1],
			'title': item[2],
			'num': item[3],
		}

class control(ui.View):
	def __init__(self):
		self.frame=(0,0,400,600)
		appex.set_widget_view(self)
		
		
	def button_tapped1(self, sender):
		webbrowser.open(sender.href)

		
	def button_tapped(self, sender):
		sender.title = ''
		self.list()
	

	def layout(self):
		button0 = ui.Button(font=('<System>', 34), frame=(100,25,200,40), tint_color='red')
		button0.title = 'TAP'
		button0.action = self.button_tapped
		self.add_subview(button0)
		return button0
	

	def list(self):
		host = 'https://s.weibo.com'
		url = 'http://s.weibo.com/top/summary?'
		html = get_page(url)
		data = parse_html(html)
		wb = get_json(data, host)
		write_data(wb)
		with open('./wb.json', 'r') as f:
			wb = f.readlines()
		for i in range(0,23):
			wbi = wb[i]
			title = json.loads(wbi)['title']
			href = json.loads(wbi)['href']
			#title = json.loads(wbi)
			button = ui.Button(title=title, font=('<System>', 18))
			button.href = 'Alook://' + href
			button.action = self.button_tapped1
			button.frame = (0,i*25,400,20)
			self.add_subview(button)

	
def main():
	control()


if __name__ == '__main__':
	main()

[ccc]

# This button will self destruct.
def button_tapped1(self, sender):
        webbrowser.open(sender.href)
        self.remove_subview(sender)

[cvp]

The real problem comes from the fact that layout is called two times, thus there are two buttons with TAP title...
Create your button0 in init and remove the layout def.
Or rename your layout into layoutx and call it in init:

    def __init__(self):
        self.frame=(0,0,400,600)
        appex.set_widget_view(self)
        self.layoutx()
.
.
.
    def layoutx(self):

[Cheng]

@cvp You are right . Function name can't be written casually.