txt = str(self.IntroducirTexto.toPlainText())
L = {"Á":"A","É":"E","Í":"I","Ó":"O","Ú":"U","á":"a","é":"e","í":"i","ó":"o","ú":"u"}
l = {"\xc1":"A","\xc9":"E","\xcd":"I","\xd3":"O","\xda":"U","\xe1":"a","\xe9":"e","\xed":"i","\xf3":"o","\xfa":"u"}
for i in txt:
	if i in L.keys():
		txt = txt.replace(i,L[i])
self.SalirTexto.setPlainText(txt)

             txt = str(self.IntroducirTexto.toPlainText())
UnicodeEncodeError: 'ascii' codec can't encode character u'\xe1' in position 3: ordinal not in tange(128)

Traceback (most recent call last):
  File "En.py", line 323, in ClickBuscarImagen
    directorio, carpeta = os.path.split(a.replace("\\","\\\\"))
  File "C:\Python27\lib\ntpath.py", line 173, in split
    while i and p[i-1] not in '/\\':
TypeError: 'in <string>' requires string as left operand, not QString

a = self.RutaCarpeta.text() #obtengo el valor dela ruta de la carpeta
directorio, carpeta = os.path.split(a.replace("\\","\\\\"))
filename = QtGui.QFileDialog.getOpenFileName(caption="Escoge una imagen..",directory=directorio)
self.RutaImagen.setText(str(filename))

MainWindow.setWindowFlags(QtCore.Qt.FramelessWindowHint)

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# -*- coding: utf-8 -*-

from PyQt4 import QtCore, QtGui
from PyQt4 import QtWebKit
import sys
import urllib2


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_MainWindow(object):
    def setupUi(self, MainWindow):
		#~ construccion de la ventana
        MainWindow.setObjectName(_fromUtf8("MainWindow"))
        MainWindow.resize(463, 527)
        icon = QtGui.QIcon()
        icon.addPixmap(QtGui.QPixmap(_fromUtf8("img/Icon_308.ico")), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        MainWindow.setWindowIcon(icon)
        MainWindow.setStyleSheet(_fromUtf8("background-color: qlineargradient(spread:pad, x1:1, y1:1, x2:0, y2:0.908682, stop:0 rgba(255, 178, 102, 255), stop:0.572139 rgba(235, 148, 61, 255), stop:1 rgba(0, 0, 0, 255));"))
        #~ centrar los objetos
        self.centralwidget = QtGui.QWidget(MainWindow)
        self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
        self.verticalLayout = QtGui.QVBoxLayout(self.centralwidget)
        self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
        self.horizontalLayout = QtGui.QHBoxLayout()
        self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout"))
        
        #~ pagina web
        self.webView = QtWebKit.QWebView(self.centralwidget)
        self.webView.setUrl(QtCore.QUrl(_fromUtf8("http://www.google.com")))
        self.webView.setObjectName(_fromUtf8("webView"))
        self.verticalLayout.addWidget(self.webView)
        
        #~ barra de progreso
        self.progressBar = QtGui.QProgressBar(self.centralwidget)
        self.progressBar.setProperty("value", 12)
        self.progressBar.setObjectName(_fromUtf8("progressBar"))
        self.verticalLayout.addWidget(self.progressBar)
        MainWindow.setCentralWidget(self.centralwidget)
		
        self.retranslateUi(MainWindow)
        #acciones
        QtCore.QObject.connect(self.progressBar, QtCore.SIGNAL(_fromUtf8("valueChanged(int)")), MainWindow.progreso_barra)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        MainWindow.setWindowTitle(_translate("MainWindow", "Lanzador", None))
        
class Myform(QtGui.QMainWindow):
    def __init__(self):
        QtGui.QWidget.__init__(self)
        #~ Ui_MainWindow.__init__(self)
        self.ui2 = Ui_MainWindow()
        self.t = self.ui2.setupUi(self)
        self.progreso_barra()
		
    def progreso_barra(self):
        remote = r"http://quecorralavoz.zz.mu/download/mia.jpg"
        local = r"c:\Python27\update1.jpg"

        u = urllib2.urlopen(remote)
        h = u.info()
        totalSize = int(h["Content-Length"])

        #print "Descargando %s bytes..." % totalSize,
        fp = open(local, 'wb')

        blockSize = 8192 #100000 # urllib.urlretrieve uses 8192
        count = 0
        while True:
            chunk = u.read(blockSize)
            if not chunk: 
                    break
            fp.write(chunk)
            count += 1
            if totalSize > 0:
                percent = int(count * blockSize * 100 / totalSize)
                if percent > 100: 
                    percent = 100
                print "%2d%%" % percent,
                if percent < 100:
                    self.t.progressBar.setValue(percent)
                    #~ print "\b\b\b\b\b",  # Erase "NN% "
                else:
                    print "Done."
        
        fp.flush()
        fp.close()
        
        if not totalSize:
            print
        
if __name__ == '__main__':
    app = QtGui.QApplication(sys.argv)
    myapp = Myform()
    
    myapp.show() 
    
    sys.exit(app.exec_())

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
		#~ construccion de la ventana
		MainWindow.setObjectName(_fromUtf8("MainWindow"))
		MainWindow.resize(463, 527)
		#~ barra de progreso
		self.progressBar = QtGui.QProgressBar(self.centralwidget)
		#~ self.progressBar.setProperty("value", 12)
		 self.progressBar.setObjectName(_fromUtf8("progressBar"))
		self.verticalLayout.addWidget(self.progressBar)
		MainWindow.setCentralWidget(self.centralwidget)
		
		self.retranslateUi(MainWindow)
		#acciones
		QtCore.QObject.connect(self.toolButtonJugar, QtCore.SIGNAL(_fromUtf8("clicked()")), MainWindow.jugar)
		QtCore.QObject.connect(self.toolButtonJugar, QtCore.SIGNAL(_fromUtf8("clicked()")), MainWindow.deleteLater)
		QtCore.QObject.connect(self.toolButtonRegistrar, QtCore.SIGNAL(_fromUtf8("clicked()")), MainWindow.registrarse)
		QtCore.QObject.connect(self.toolButtonConfigurar, QtCore.SIGNAL(_fromUtf8("clicked()")), MainWindow.configurar)
		QtCore.QObject.connect(self.progressBar, QtCore.SIGNAL(_fromUtf8("valueChanged(int)")), MainWindow.progreso_barra)
		QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
		..................


class Myform(QtGui.QMainWindow,Ui_MainWindow):
	def __init__(self):
		QtGui.QWidget.__init__(self)
		Ui_MainWindow.__init__(self)
		self.ui = Ui_MainWindow()
		self.t = self.ui.setupUi(self)
		self.progreso_barra()

	def progreso_barra(self):
		remote = r"http://quecorralavoz.zz.mu/download/mia.jpg"
		local = r"c:\Python27\update1.jpg"

		u = urllib2.urlopen(remote)
		h = u.info()
		totalSize = int(h["Content-Length"])

		#print "Descargando %s bytes..." % totalSize,
		fp = open(local, 'wb')

		blockSize = 8192 #100000 # urllib.urlretrieve uses 8192
		count = 0
		while True:
			chunk = u.read(blockSize)
			if not chunk: 
				break
			fp.write(chunk)
			count += 1
			if totalSize > 0:
				percent = int(count * blockSize * 100 / totalSize)
				if percent > 100: 
					percent = 100
				print "%2d%%" % percent,
				if percent < 100:
					self.t.progressBar.setProperty("value", percent)
					#~ print "\b\b\b\b\b",  # Erase "NN% "
				else:
					print "Done."
		
		fp.flush()
		fp.close()
		
		if not totalSize:
			print

if __name__ == '__main__':
	app = QtGui.QApplication(sys.argv)
	myapp = Myform()
	myapp.show()
	
	sys.exit(app.exec_())

    self.t.progressBar.setProperty("value", percent)
AttributeError: 'NoneType' object has no attribute 'progressBar'

import urllib2

remote = r"http://cambiemosjuntosunivalle.netai.net/ptf/update.txt"
local = r"c:\Python27\update.txt"

u = urllib2.urlopen(remote)
h = u.info()
totalSize = int(h["Content-Length"])

print "Descargando %s bytes..." % totalSize,
fp = open(local, 'wb')

blockSize = 8192 #100000 # urllib.urlretrieve uses 8192
count = 0
while True:
    chunk = u.read(blockSize)
    if not chunk: break
    fp.write(chunk)
    count += 1
    if totalSize > 0:
        percent = int(count * blockSize * 100 / totalSize)
        if percent > 100: percent = 100
        print "%2d%%" % percent,
        if percent < 100:
            print "\b\b\b\b\b",  # Erase "NN% "
        else:
            print "Done."

fp.flush()
fp.close()
if not totalSize:
    print

Traceback (most recent call last):
  File "C:/Python27/descarga.py", line 6, in <module>
    u = urllib2.urlopen(remote)
  File "C:\Python27\lib\urllib2.py", line 126, in urlopen
    return _opener.open(url, data, timeout)
  File "C:\Python27\lib\urllib2.py", line 406, in open
    response = meth(req, response)
  File "C:\Python27\lib\urllib2.py", line 519, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:\Python27\lib\urllib2.py", line 444, in error
    return self._call_chain(*args)
  File "C:\Python27\lib\urllib2.py", line 378, in _call_chain
    result = func(*args)
  File "C:\Python27\lib\urllib2.py", line 527, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
HTTPError: HTTP Error 302: Found

Traceback (most recent call last):
  File "C:/Python27/descarga.py", line 7, in <module>
    h = u.info()
AttributeError: 'tuple' object has no attribute 'info'