PyQT для начинающего

import cookielib
import urllib2
import urllib
from urlparse import urlparse
from HTMLParser import HTMLParser
 
class FormParser(HTMLParser):
    def __init__(self):
        HTMLParser.__init__(self)
        self.url = None
        self.params = {}
        self.in_form = False
        self.form_parsed = False
        self.method = "GET"
 
    def handle_starttag(self, tag, attrs):
        tag = tag.lower()
        if tag == "form":
            if self.form_parsed:
                raise RuntimeError("Second form on page")
            if self.in_form:
                raise RuntimeError("Already in form")
            self.in_form = True
        if not self.in_form:
            return
        attrs = dict((name.lower(), value) for name, value in attrs)
        if tag == "form":
            self.url = attrs["action"]
            if "method" in attrs:
                self.method = attrs["method"].upper()
        elif tag == "input" and "type" in attrs and "name" in attrs:
            if attrs["type"] in ["hidden", "text", "password"]:
                self.params[attrs["name"]] = attrs["value"] if "value" in attrs else ""
 
    def handle_endtag(self, tag):
        tag = tag.lower()
        if tag == "form":
            if not self.in_form:
                raise RuntimeError("Unexpected end of <form>")
            self.in_form = False
            self.form_parsed = True
 
def auth(email, password, client_id, scope):
    def split_key_value(kv_pair):
        kv = kv_pair.split("=")
        return kv[0], kv[1]
 
    # Authorization form
    def auth_user(email, password, client_id, scope, opener):
        response = opener.open(
            "http://oauth.vk.com/oauth/authorize?" + \
            "redirect_uri=http://oauth.vk.com/blank.html&response_type=token&" + \
            "client_id=%s&scope=%s&display=wap" % (client_id, ",".join(scope))
            )
        doc = response.read()
        parser = FormParser()
        parser.feed(doc)
        parser.close()
        if not parser.form_parsed or parser.url is None or "pass" not in parser.params or \
          "email" not in parser.params:
              raise RuntimeError("Something wrong")
        parser.params["email"] = email
        parser.params["pass"] = password
        if parser.method == "POST":
            response = opener.open(parser.url, urllib.urlencode(parser.params))
        else:
            raise NotImplementedError("Method '%s'" % parser.method)
        return response.read(), response.geturl()
 
    # Permission request form
    def give_access(doc, opener):
        parser = FormParser()
        parser.feed(doc)
        parser.close()
        if not parser.form_parsed or parser.url is None:
              raise RuntimeError("Something wrong")
        if parser.method == "POST":
            response = opener.open(parser.url, urllib.urlencode(parser.params))
        else:
            raise NotImplementedError("Method '%s'" % parser.method)
        return response.geturl()
 
 
    if not isinstance(scope, list):
        scope = [scope]
    opener = urllib2.build_opener(
        urllib2.HTTPCookieProcessor(cookielib.CookieJar()),
        urllib2.HTTPRedirectHandler())
    doc, url = auth_user(email, password, client_id, scope, opener)
    if urlparse(url).path != "/blank.html":
        # Need to give access to requested scope
        url = give_access(doc, opener)
    if urlparse(url).path != "/blank.html":
        raise RuntimeError("Expected success here")
    answer = dict(split_key_value(kv_pair) for kv_pair in urlparse(url).fragment.split("&"))
    if "access_token" not in answer or "user_id" not in answer:
        raise RuntimeError("Missing some values in answer")
    return answer["access_token"], answer["user_id"]

from PyQt4 import QtCore, QtGui
 
try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    def _fromUtf8(s):
        return s
 
try:
    _encoding = QtGui.QApplication.UnicodeUTF8
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig)
 
class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName(_fromUtf8("Dialog"))
        Dialog.resize(339, 221)
        self.buttonBox = QtGui.QDialogButtonBox(Dialog)
        self.buttonBox.setGeometry(QtCore.QRect(40, 150, 211, 32))
        self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
        self.buttonBox.setStandardButtons(QtGui.QDialogButtonBox.Cancel|QtGui.QDialogButtonBox.Ok)
        self.buttonBox.setObjectName(_fromUtf8("buttonBox"))
        self.lineEdit = QtGui.QLineEdit(Dialog)
        self.lineEdit.setGeometry(QtCore.QRect(140, 40, 113, 27))
        self.lineEdit.setObjectName(_fromUtf8("lineEdit"))
        self.lineEdit_2 = QtGui.QLineEdit(Dialog)
        self.lineEdit_2.setGeometry(QtCore.QRect(140, 80, 113, 27))
        self.lineEdit_2.setObjectName(_fromUtf8("lineEdit_2"))
        self.labelOne = QtGui.QLabel(Dialog)
        self.labelOne.setGeometry(QtCore.QRect(70, 40, 51, 17))
        self.labelOne.setObjectName(_fromUtf8("labelOne"))
        self.labelTwo = QtGui.QLabel(Dialog)
        self.labelTwo.setGeometry(QtCore.QRect(70, 90, 51, 17))
        self.labelTwo.setObjectName(_fromUtf8("labelTwo"))
 
        self.retranslateUi(Dialog)
        QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL(_fromUtf8("accepted()")), Dialog.accept)
        QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL(_fromUtf8("rejected()")), Dialog.reject)
        QtCore.QMetaObject.connectSlotsByName(Dialog)
 
    def retranslateUi(self, Dialog):
        Dialog.setWindowTitle(_translate("Dialog", "Авторизация", None))
        self.labelOne.setText(_translate("Dialog", "Логин", None))
        self.labelTwo.setText(_translate("Dialog", "Пароль", None))