from PyQt4.QtGui import *
from PyQt4.QtCore import *


class user_password(QWidget):
    def __init__(self):
        self.app = QApplication([])
        self.win = QWidget()
        self.main_layout = QVBoxLayout(self.win)
        self.form = QFormLayout()

        self.u_label = QLabel('User:')
        self.p_label = QLabel('Password:')
        self.u_edit = QLineEdit()
        self.p_edit = QLineEdit()
        self.ok = QPushButton('Submit')

        self.win.setWindowTitle('What\'s your password?')
        self.u_edit.setEchoMode(0)
        self.p_edit.setEchoMode(2) # password = asterisks

        self.form.addRow(self.u_label, self.u_edit)
        self.form.addRow(self.p_label, self.p_edit)
        self.main_layout.addLayout(self.form)
        self.main_layout.addWidget(self.ok)

        #self.ok.clicked.connect(self.print_values)
        self.connect(self.ok, SIGNAL('clicked()'), self.print_values)

        self.win.show()
        self.app.exec_()

    def print_values(self):
        print 'foo'