我正在编写一个音乐下载程序并且下载需要一段时间并且GUI会在发生这种情况时冻结,所以我如何才能使GUI在下载过程中继续运行
以下是相关代码:
class GUI(wx.Frame):
def __init__(self, parent, id, title):
self.retreive_range = 10
self.convert_range = 10
self.download_range = 100
self.timer1 = wx.Timer(self, 1)
self.timer2 = wx.Timer(self, 1)
self.timer3 = wx.Timer(self, 1)
self.count = 0
self.count2 = 0
self.count3 = 0
self.getfile = Get_file()
self.Bind(wx.EVT_TIMER, self.OnTimer1, self.timer1)
#All the GUI code!
def retrieve(self, e):
self.timer1.Start(100)
self.text.SetLabel('Retrieving URL...')
query = self.tc.GetValue()
self.vidurl = self.getfile.get_url(query)
def convert(self):
self.timer2.Start(200)
self.text.SetLabel('Converting...')
self.res_html = self.getfile.get_file('http://www.youtube.com/%s'%self.vidurl)
print self.res_html
def download(self):
self.text.SetLabel('Downloading...')
threading.Thread(None, target=self.getfile.download_file(self.res_html))
def OnTimer1(self, e):
self.count = self.count + 1
self.gauge.SetValue(self.count)
if self.count == self.retreive_range:
self.timer1.Stop()
self.text.SetLabel('Url Retreived!')
self.Bind(wx.EVT_TIMER, self.OnTimer2, self.timer2)
self.convert()
def OnTimer2(self, e):
self.count2 = self.count2 + 1
self.gauge.SetValue(self.count2)
print self.count2
if self.count2 == self.convert_range:
self.timer2.Stop()
self.text.SetLabel('Converted!')
self.Bind(wx.EVT_TIMER, self.OnTimer3, self.timer3)
self.download()
def OnTimer3(self, e):
self.count3 = self.count3 + 0.5
self.gauge.SetValue(self.count3)
if self.count3 == self.download_range:
self.timer3.Stop()
self.text.SetLabel('Downloaded!')
self.gauge.SetValue(0)
我尝试创建一个新线程,但它没有帮助。任何人都可以帮助我
答案 0 :(得分:0)
在此代码中有两个错误:
def download(self):
self.text.SetLabel('Downloading...')
threading.Thread(None, target=self.getfile.download_file(self.res_html))
start()
的{{1}}方法才能执行Thread
target
应该是可调用的,但这样做:
target
您已在创建target=self.getfile.download_file(self.res_html)
之前调用函数,然后将返回值分配给Thread
。这是你看到GUI冻结的问题。您必须使用target
:
lambda
或target=lambda: self.getfile.download_file(self.res_html)
:
functools.partial
这样,该函数将在另一个线程中调用。
样式注释:在创建target=partial(self.getfile.download_file, self.res_html)
时, 必须指定None
:
Thread