我正在使用python gtk通过boto API将文件上传到S3服务，在上传文件时发布GUI并在完成上传过程后释放GUI，我使用线程在GUI中显示上传进度但是它已经被触发。你有什么建议如何在上传完成之前显示在GUI或任何微调器中上传的进度。我是python的新手，你可以建议如何使用线程进行GUI。
#!/usr/bin/env python
import pygtk
pygtk.require('2.0')
import gtk
import boto
from boto.s3.connection import S3Connection
from boto.s3.key import Key
from boto.exception import S3ResponseError, S3CreateError
import threading
import random, time
gtk.threads_init()
class FractionSetter(threading.Thread):
"""This class sets the fraction of the progressbar"""
#Thread event, stops the thread if it is set.
stopthread = threading.Event()
def run(self):
"""Run method, this is the code that runs while thread is alive."""
#Importing the progressbar widget from the global scope
global progressbar
#While the stopthread event isn't setted, the thread keeps going on
while not self.stopthread.isSet() :
# Acquiring the gtk global mutex
gtk.threads_enter()
#Setting a random value for the fraction
progressbar.set_fraction(random.random())
# Releasing the gtk global mutex
gtk.threads_leave()
#Delaying 100ms until the next iteration
time.sleep(0.1)
def stop(self):
"""Stop method, sets the event to terminate the thread's main loop"""
self.stopthread.set()
class SampleGUI:
def destroy(self,widget,data=None):
global fs
fs.stop()
gtk.main_quit()
def get_relative_filename(self, filename):
f_parts = filename.split('/')
return f_parts[len(f_parts) - 1]
def browse(self,widget):
chooser1 = gtk.FileChooserDialog(title=None,action=gtk.FILE_CHOOSER_ACTION_OPEN,
buttons=(gtk.STOCK_CANCEL,gtk.RESPONSE_CANCEL,gtk.STOCK_OPEN,gtk.RESPONSE_OK))
chooser1.set_show_hidden(True)
response1 = chooser1.run()
if response1 == gtk.RESPONSE_OK:
global filename1
filename1 = chooser1.get_filename()
self.textbox.set_text(filename1)
print filename1
elif response1 == gtk.RESPONSE_CANCEL:
chooser1.destroy()
chooser1.destroy()
def ensure_bucket(self,connection, bucket, canned_acl=None):
bucket_instance = None
try:
print 'Checking bucket:', bucket
bucket_instance = connection.get_bucket(bucket)
except S3ResponseError, s3error:
s3error_string = '%s' % s3error
if s3error_string.find('404') >= 0:
try:
bucket_instance = self.create_bucket(connection, bucket,
canned_acl)
except S3CreateError:
print 'Unable to create bucket %s' % bucket
message1 = gtk.MessageDialog(type=gtk.MESSAGE_INFO, buttons=gtk.BUTTONS_OK)
msgg = "Unable to create bucket "+bucket
message1.set_markup(msgg)
message1.run()
message1.destroy()
elif s3error_string.find('403') >= 0:
message1 = gtk.MessageDialog(type=gtk.MESSAGE_ERROR, buttons=gtk.BUTTONS_OK)
msgg = "You do not have permission to access bucket"
message1.set_markup(msgg)
message1.run()
message1.destroy()
d.hide()
d.destroy()
print 'You do not have permission to access bucket:', bucket
else:
print s3error_string
sys.exit()
return bucket_instance
def upload_file(self,bucket_instance, filename,
canned_acl=None):
fs = FractionSetter()
global fs
fs.start()
print 'Uploading file'
print "file name",filename
k = Key(bucket_instance)
k.key = self.get_relative_filename(filename)
m_file = open(filename, 'rb')
print filename
try:
k.set_contents_from_file(m_file,policy=canned_acl)
fs.stop()
except S3ResponseError, s3error:
s3error_string = '%s' % s3error
if s3error_string.find('403') >= 0:
print 'Permission denied while writing:', k.key
else:
print s3error_string
sys.exit()
def submitt(self,widget):
print "submitt"
global filename1
print "file name",filename1
conn = boto.s3.connection.S3Connection(
aws_access_key_id='WKy3rMzOWPouVOxK1p3Ar1C2uRBwa2FBXnCw',
aws_secret_access_key='UmMJCdlCXvW9DJOgN2MkTOmEXJJKcQu62bFWg',
is_secure=False,
host="10.184.39.113",
port=8773,
calling_format=boto.s3.connection.OrdinaryCallingFormat(),
path='/services/Walrus',
)
print conn
bucket_instance = self.ensure_bucket(conn, "sample", canned_acl=None)
print bucket_instance
self.upload_file(bucket_instance, filename1, canned_acl=None)
def pageChanged(self,notebook,page,page_num):
print "ClickedMe called for"
def __init__(self):
self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
self.window.set_position(gtk.WIN_POS_CENTER_ALWAYS)
self.window.set_size_request(600,400)
self.window.set_title("UPLOAD A OBJECT TO S3")
self.window.set_resizable(False)
self.button1 = gtk.Button("Browse")
self.button1.connect("clicked",self.browse)
self.button2 = gtk.Button("Submit")
self.button2.connect("clicked",self.submitt)
self.textbox = gtk.Entry()
self.label1 = gtk.Label("<b>Upload objects to S3</b>")
self.label1.set_use_markup(True)
self.table = gtk.Table(5, 5, True)
notebook = gtk.Notebook()
notebook.set_tab_pos(gtk.POS_TOP)
notebook.connect("switch-page",self.pageChanged)
page1 = gtk.Frame(label=None)
self.table.attach(self.label1, 1, 4, 1, 2)
self.table.attach(self.textbox, 1, 4, 2, 3)
self.table.attach(self.button1, 4, 5, 2, 3, xpadding=20, ypadding=20)
self.table.attach(self.button2, 4, 5, 3, 4,xpadding=20, ypadding=20)
global progressbar
progressbar = gtk.ProgressBar()
self.table.attach(progressbar, 0, 5, 4, 5, xpadding=20, ypadding=20)
page1.add(self.table)
notebook.append_page(page1,gtk.Label('Upload Files'))
self.window.add(notebook)
self.window.show_all()
self.window.connect("destroy",self.destroy)
def main(self):
gtk.main()
fs = FractionSetter()
global fs
fs.start()
if __name__ == "__main__":
base = SampleGUI()
base.main()
答案 0 :(得分：1)
这可能会有所帮助
关注Pygtk常见问题http://faq.pygtk.org/index.py?req=show&file=faq23.020.htp
您可能需要在代码中添加以下两行来继续主迭代
while gtk.events_pending():
gtk.main_iteration()