Question

我为使用wxPython的游戏制作了一个非常简单的GUI安装程序。尽管它是用于游戏的，但如果有链接，从技术上讲，它可用于下载和解压缩任何zip文件。问题是当我运行该程序时，GUI冻结了。它仍然像预期的那样下载和提取，但是在这种情况下，GUI完全冻结了。除非取消冻结，否则无法更新文本框或建立下载栏。我知道为什么会冻结，只是不知道如何解决。有人可以帮我吗？

这是我的代码：

import requests, os, sys, zipfile, shutil, subprocess, wx, urllib

url = "{Put any zip file URL here to test the program}"
r = requests.get(url, stream = True)

class Frame(wx.Frame):
    def __init__(self, parent, id, title):
        wx.Frame.__init__(self, parent, id, title, style=wx.DEFAULT_FRAME_STYLE ^ wx.RESIZE_BORDER)
        myPanel = wx.Panel(self,-1)
        myButton = wx.Button(myPanel, -1, 'Download', size=(300,50), pos=(40,350))
        myButton.Bind(wx.EVT_LEFT_DOWN, self.onClick)
        self.Show(True)
    def onClick(self, e):
        print ('Clicked')
        if os.path.exists("RFMB6_WINDOWS"):
            print('\n\nRemoving old RFMP files...')
            subprocess.check_call(('attrib -R ' + 'RFMB6_WINDOWS' + '\\* /S').split())
            shutil.rmtree('RFMB6_WINDOWS')
            print('\nRemoved old files.')
        else:
            pass

        print('\n\nDownloading:')
        urllib.request.urlretrieve(url, 'RFMP.zip')
        print('\nDownload Complete.')
        print('\n\nExtracting...')
        zip_ref = zipfile.ZipFile("RFMP.zip", 'r')
        zip_ref.extractall("RFMB6_WINDOWS")
        zip_ref.close()
        print('\nExtraction Complete')
        print('\n\nCleaning up...')
        os.remove("RFMP.zip")
        print('\nDone! You have succesfully installed the newest version of the Ravenfield Multiplayer Private Alpha.')

app = wx.App()
frame = Frame(None, wx.ID_ANY, 'Image')
app.MainLoop()

Answer 1

好的，所以我知道了。正如我所说的，我需要对GUI进行多线程处理，但是当时我无法弄清楚。我现在有。我需要做的是在单独的线程上对GUI和我的“进程”进行多线程处理。这意味着GUI（您所看到的）运行在与处理数据（下载，提取等）不同的线程上。

在使用此代码之前，我想告诉您这不是一个完成的程序。从下载链接中下载并解压缩.zip而不冻结它只是最低要求。

这是我现在用来解决问题的代码：

# Import libraries
import requests, os, sys, zipfile, shutil, subprocess, wx, urllib, time
from threading import *

# Define variables
url = "Put any zip file URL here to test the program"
r = requests.get(url, stream = True)

# Button definitions
ID_START = wx.NewId()

# Define notification event for thread completion
EVT_RESULT_ID = wx.NewId()

# Check  for old files
def Check():
    if os.path.exists("Folder"):
        print('\n\nRemoving old files...')
        subprocess.check_call(('attrib -R ' + 'Folder' + '\\* /S').split())
        shutil.rmtree('Folder')
        print('\nRemoved old files.')
    else:
        pass

# Download new file
def Download():
    print('\n\nDownloading:')
    urllib.request.urlretrieve(url, 'temp.zip')
    print('\nDownload Complete.')

# Extract new file
def Extract():
    print('\n\nExtracting...')
    zip_ref = zipfile.ZipFile("temp.zip", 'r')
    zip_ref.extractall("Folder")
    zip_ref.close()
    print('\nExtraction Complete')

# Delete the .zip file but leave the folder
def Clean():
    print('\n\nCleaning up...')
    os.remove("temp.zip")
    print('\nDone!')

# Thread class that executes processing
class WorkerThread(Thread):
    """Worker Thread Class."""
    def __init__(self, notify_window):
        """Init Worker Thread Class."""
        Thread.__init__(self)
        self._notify_window = notify_window
        # This starts the thread running on creation.
        self.start()

# This is what runs on a separate thread when you click the download button
    def run(self):
        """Run Worker Thread."""
        # This is the code executing in the new thread. 
        Check()
        Download()
        Extract()
        Clean()

# GUI Frame class that spins off the worker thread
class MainFrame(wx.Frame):
    """Class MainFrame."""
    def __init__(self, parent, id):
        """Create the MainFrame."""
        wx.Frame.__init__(self, parent, id, 'GUInstaller', 
                          style=wx.DEFAULT_FRAME_STYLE ^ wx.RESIZE_BORDER)
        self.SetSize(400, 350)
        wx.Button(self, ID_START, 'Download', size=(300,50), pos=(42,250))
        self.status = wx.StaticText(self, -1, '', pos=(0,200))
        self.Bind(wx.EVT_BUTTON, self.OnStart, id=ID_START)

        # And indicate we don't have a worker thread yet
        self.worker = None

    def OnStart(self, event):
        """Start Computation."""
        # Trigger the worker thread unless it's already busy
        if not self.worker:
            self.status.SetLabel('Downloading...')
            self.worker = WorkerThread(self)

    def OnResult(self, event):
        """Show Result status."""
        self.status.SetLabel('Done!')
        # The worker is done
        self.worker = None

class MainApp(wx.App):
    """Class Main App."""
    def OnInit(self):
        """Init Main App."""
        self.frame = MainFrame(None, -1)
        self.frame.Show(True)
        self.SetTopWindow(self.frame)
        return True

# Main Loop
if __name__ == '__main__':
    app = MainApp(0)
    app.MainLoop()

P.S。并非所有这些都是我的代码。我从另一个网站上举了一个例子，并对其进行了修改以满足自己的需求。

我的python安装程序在工作时冻结。我如何解决它？

1 个答案: