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我正在为我的小型游戏创建启动程序/更新程序。我有程序创建GUI然后让它自动开始下载版本文件，以检查是否需要更新。可惜的是，使用Tkinter制作的gui在文件下载后才会显示。 gui出现后有没有办法让文件下载？在执行程序的其余部分之前显示的Python Tkinter
"""
Programmer: JR Padfield
Description: Downloads file/s from a web server
Version: 1
Date: 05/16/15
"""
import urllib2
import ConfigParser
import os
import hashlib
from Tkinter import *
import ttk
from PIL import Image, ImageTk
class Launcher(Frame):
""" Main class for the launcher """
def __init__(self, parent):
Frame.__init__(self, parent, background="white")
self.parent = parent
self.parent.title("The World Launcher")
self.pack(fill=BOTH, expand=1)
# create a lists for the.py checksum
self.pymd5 = []
self.pymd5fromini = []
# create a list for the graphics checksum
self.graphicsmd5 = []
self.graphicsmd5fromini = []
self.initUI()
def initUI(self):
""" Intializes the gui interface. """
self.image = Image.open('azurekite.jpg')
self.tkimage = ImageTk.PhotoImage(self.image)
canvas = Canvas(self, width=self.image.size[0]+20,
height=self.image.size[1]+20)
canvas.create_image(0, 0, anchor='nw', image=self.tkimage)
canvas.pack(fill=BOTH, expand=1)
self.playButton = Button(self, text="Play The World", command=self.play)
self.playButton.place(x=900, y=725)
self.forumButton = Button(self, text="Check Forums", command=self.forums)
self.forumButton.place(x=780, y=725)
self.newsText = Text(self, height=20, width=40)
self.newsText.place(x=10, y=10)
self.newsText.insert(END, "News Text goes here")
self.newsText.config(state=DISABLED)
self.updateLabel = Label(self, text="Starting Update Checks...")
self.updateLabel.place(x=50, y=680)
self.updateBar = ttk.Progressbar(self, orient='horizontal', length=400, mode="determinate")
self.updateBar.place(x=50, y=700)
self.updateBar["value"] = 0
# calls the first check to get things rolling
#self.startCheck()
def play(self):
""" Closes the launcher and plays the game """
def forums(self):
""" Launches the forums """
def startCheck(self):
self.updateLabel.config(text="Downloading news and version files")
try:
url = "http://removedrealurl.net/game/updates/version.ini"
hdr = {'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11',
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
'Accept-Charset': 'ISO-8859-1,utf-8;q=0.7,*;q=0.3',
'Accept-Encoding': 'none',
'Accept-Language': 'en-US,en;q=0.8',
'Connection': 'keep-alive'}
file_name = url.split('/')[-1]
print(file_name)
req = urllib2.Request(url, headers=hdr)
u = urllib2.urlopen(req)
print("opened url")
f = open(file_name, "wb")
meta = u.info()
file_size = int(meta.getheaders("Content-Length")[0])
print "Downloading: %s Bytes: %s" % (file_name, file_size)
self.updateBar["maximum"] = file_size
file_size_dl = 0
block_sz = 8192
while True:
buffer = u.read(block_sz)
if not buffer:
break
file_size_dl += len(buffer)
f.write(buffer)
status = r"%10d [%3.2f%%]" % (file_size_dl, file_size_dl * 100./file_size)
status += chr(8) * (len(status) + 1)
self.updateBar["value"] = file_size_dl
print status
f.close()
except urllib2.HTTPError, e:
print(e)
self.updateLabel.config(text="Reading Version file....")
config = ConfigParser.ConfigParser()
config.read("version.ini")
gameweb = config.get('UPDATER', 'GameWebsite')
updateurl = config.get('UPDATER', 'updateURL')
versionNum = config.get('UPDATER', 'GameWebsite')
# # get the pyfiles check sum values.
# pycount = config.get('PYFILES', 'COUNT')
#
# for i in range(pycount):
# self.pymd5fromini.append(config.get('PYFILES', 'pyfile' + i))
#
# # get the graphics check sum
# gcount = config.getint('GRAPHICS', 'COUNT')
#
# for i in range(gcount):
# self.graphicsmd5fromini.append(config.get('GRAPHICS', 'graphic' + i))
os.rename("version.ini", "oldVersion.ini")
def checksum(self):
self.updateLabel.config(text="Checking local files....")
""" Checks all files to see if they have been changed. """
for file in os.listdir('/TW'):
if file.endswith('.py'):
# check the md5. open the file to check the contents.
with open(file) as checkFile:
data = checkFile.read()
md5 = hashlib.md5(data).hexdigest()
self.pymd5.append(md5)
self.updateLabel.config(text="Checking local graphics....")
for file in os.listdir('/data/gui'):
if file.endswith('.png'):
# check the md5. open the file to check the contents.
with open(file) as checkFile:
data = checkFile.read()
md5 = hashlib.md5(data).hexdigest()
self.graphicsmd5.append(md5)
for file in os.listdir('/data/items'):
if file.endswith('.png'):
# check the md5. open the file to check the contents.
with open(file) as checkFile:
data = checkFile.read()
md5 = hashlib.md5(data).hexdigest()
self.graphicsmd5.append(md5)
for file in os.listdir('/data/sprites'):
if file.endswith('.png'):
# check the md5. open the file to check the contents.
with open(file) as checkFile:
data = checkFile.read()
md5 = hashlib.md5(data).hexdigest()
self.graphicsmd5.append(md5)
for file in os.listdir('/data/tilesets'):
if file.endswith('.png'):
# check the md5. open the file to check the contents.
with open(file) as checkFile:
data = checkFile.read()
md5 = hashlib.md5(data).hexdigest()
self.graphicsmd5.append(md5)
def main():
""" Launches the program """
root = Tk()
root.geometry('1024x768')
app = Launcher(root)
root.mainloop()
if __name__ == '__main__':
main()