我是 GUI 编程的新手，我正在尝试为我的一个 python 解析器制作一个 GUI。
我知道 ：
Tkinter 是单线程的。屏幕更新发生在事件循环的每次行程中。每当您有一个长时间运行的命令时，您都会阻止事件循环完成迭代，从而阻止事件的处理，从而阻止重绘。
我的程序调用了一个大函数，大约需要 5 分钟才能完全运行。所以我想唯一的解决方案是你使用线程来执行长时间运行的命令。但是，我长时间运行的命令已经线程化，所以我真的不知道如何继续。
--> 只要我在 GUI 中单击 BUT1，程序就会冻结，直到功能完全完成。我想在后台运行这个函数，这样程序就不会冻结。
--> 我不是在寻找一个完整的解决方案，但如果有人能让我走上正轨，那就太好了！
- Main.py -> 图形用户界面
- Module_1.py -> 我们通过单击按钮 BUT1 调用的函数
先感谢您 ！
这是 Main.py --> GUI
#!/usr/bin/python
# -*- coding: utf-8 -*-
from Tkinter import *
import sys
import tkMessageBox
import tkFileDialog
import Module_1
import csv
from time import strftime, gmtime
DATE = strftime("_%d_%b_%Y")
class App:
def __init__(self, master):
self.frame = Frame(master, borderwidth=5, relief=RIDGE)
self.frame.grid()
class IORedirector(object):
def __init__(self,TEXT_INFO):
self.TEXT_INFO = TEXT_INFO
class StdoutRedirector(IORedirector):
def write(self,str):
self.TEXT_INFO.config(text=self.TEXT_INFO.cget('text') + str)
self.TEXT_HEADER = self.text_intro = Label(self.frame, bg="lightblue",text="THIS IS \n MY SUPER PROGRAM")
self.TEXT_HEADER.grid(row=0, column=0, columnspan=2, sticky=W+E+N+S)
self.MENU = Frame(self.frame, borderwidth=5, relief=RIDGE, height=12)
self.MENU.grid(row=1, column=0, sticky=N)
self.button = Button(self.MENU, text="QUIT", bg="red", command=self.frame.quit)
self.button.grid(row=4, column=0)
self.BUT1 = Button(self.MENU, text="BUT1", command=self.BUT1)
self.BUT1.grid(row=0, column=0,sticky=W+E)
self.TEXT_INFO = Label(self.frame, height=12, width=40, text="SOME TEXT", bg="grey",borderwidth=5, relief=RIDGE)
self.TEXT_INFO.grid(row=1, column=1, sticky = N+W)
sys.stdout = StdoutRedirector(self.TEXT_INFO)
def BUT1(self):
self.BUT1.config(text="RUNNING")
self.TEXT_INFO.config(text="BUT1 LAUNCHED")
Module_1.main("BUT1")
## HERE WE NEED TO RUN THE FUNCTION
## THE PROGRAMM FREEZE HERE UNTIL THE FUNCTION IS ENTIRELY RUN
self.TEXT_INFO.config(text="BUT1 FINISHED")
self.BUT1.config(text="DONE")
root = Tk()
app = App(root)
root.mainloop()
这里是 Module_1.py --> 包含大函数
#!/usr/bin/python
# -*- coding: utf-8 -*-
import Queue
import threading
import urllib2
import time
from bs4 import BeautifulSoup as soup
from urllib2 import urlopen
import re
import os
import random
import sys
import logging
import csv
from time import strftime, gmtime
import os
import random
import shutil
import sys
import re
import logging
from threading import RLock
from time import strftime, gmtime
import csv
import urllib
from urllib import urlretrieve
from grab.spider import Spider, Task
logging.basicConfig(level=logging.CRITICAL) # Loggin to DEBUG / INFO
log = logging.getLogger()
DATE = strftime("_%d_%b_%Y")
class SPIDER1(Spider):
initial_urls = ['URL_THAT_I_NEED_TO_PARSE']
def __init__(self):
super(SPIDER1, self).__init__(
thread_number=20,
network_try_limit=20,
task_try_limit=20
)
self.result = {}
def task_initial(self, grab, task):
for opt in grab.css_list("select[name='Template$TestCentreSearch1$SubRegionList'] option")[1:]:
grab.set_input('Template$TestCentreSearch1$SubRegionList', opt.attrib['value'])
grab.submit(extra_post={
'__EVENTTARGET': 'Template$TestCentreSearch1$SubRegionList'
}, make_request=False)
yield Task('parse', grab=grab, country=opt.text_content())
def task_parse(self, grab, task):
log.info('downloaded %s' % task.country)
city_gen = (x.text_content() for x in grab.css_list(".TestCentreSearchLabel+br+span"))
title_gen = (x.text_content() for x in grab.css_list(".TestCentreSearchTitle"))
id_gen = (x.attrib['href'][-36:] for x in grab.css_list(".TestCentreSearchLink"))
for x in zip(city_gen, title_gen, id_gen):
self.result[x[2]] = {
'country': task.country,
'city': x[0],
'name': x[1],
'id': x[2],
'price':'',
'currency':'',
'fee':''
}
yield Task('info', 'URL_URL=%s' % x[2], id=x[2])
def task_info(self, grab, task):
for label in grab.css_list(".TestCentreViewLabel"):
if label.text_content().strip()=="Test Fee:":
fees = label.getnext().text_content().strip()
self.result[task.id]['fee'] = fees
price = re.findall('\d[\d\., ]+\d',fees)
if price:
price = re.findall('\d[\d\., ]+\d',fees)[0]
self.result[task.id]['price'] = price.replace(' ','').replace(',','.')
currency = re.findall('[A-Z]{2,3}[$|€|£]?',fees)
if not currency:
currency = re.findall('[$|€|£]',fees)
if not currency:
currency = fees.replace(price,'').strip().replace(' ','')
if isinstance(currency,list):
currency = currency[0]
self.result[task.id]['currency'] = currency
#log.info(' %(price)s %(currency)s - %(fee)s ' % self.result[task.id])
break
def dump(self, path):
"""
Save result as csv into the path
"""
with open(path, 'w') as file:
file.write("ID;Country;State;City;Name;Price;Currency;Original Fee\n")
for test_center in sorted(self.result.values(), key=lambda x: "%(country)s%(city)s%(name)s" % x):
file.write(("%(id)s;%(country)s;;%(country)s;%(name)s;%(price)s;%(currency)s;%(fee)s\n" % test_center).encode('utf8'))
def main(choice):
parser, path, name = None, None, None
def run(name,parser,path):
log.info('Parsing %s...' % name)
parser.run()
parser.dump(path)
log.info('Parsing %s completed, data was dumped into %s' % (name, path))
log.info(parser.render_stats())
if choice == "NONE":
# DO NOTHING
# HERE I'D LIKE TO HAVE ANOTHER CALL TO ANOTHER THREADED FUNCTION
elif choice == "BUT1":
run('Function1',SPIDER1(),'C:\LOL\Output1'+DATE+'.csv')
因此，通过单击 BUT1，我们运行 Module_1.py 文件中包含的 main("BUT1") 函数，其参数 BUT1 启动 -> run('Function1',SPIDER1(),'C:\LOL\Output1'+DATE+ '.csv') 然后程序冻结直到解析器完成是工作.. :)