Python-сообщество

#!/usr/bin/python
# -*- coding: utf-8 -*-
import sys
from PyQt4 import  QtGui,QtCore
WHAT=0                                     # глоб. прем. - счетчик

class Counter(QtGui.QWidget):              # класс счетчиков
    def __init__(self,*args):              # конструктор
        QtGui.QWidget.__init__(self,*args)
    def myreaction():                      # реализация слота
	global WHAT
	WHAT +=1
	print "It's myreaction WHAT=",WHAT    

if __name__=="__main__":
    app = QtGui.QApplication(sys.argv)
    counter=Counter()                      # создаем объект
    button = QtGui.QPushButton()           # создаем кнопку
    
    # 1) QtCore.QObject.connect(button, QtCore.SIGNAL("clicked()"), Counter().myreaction())  
    # 2) QtCore.QObject.connect(button, QtCore.SIGNAL("clicked()"), Counter.myreaction())
    # 3)QtCore.QObject.connect(button, QtCore.SIGNAL("clicked()"), counter, Counter.myreaction())
    print WHAT                             # дублирующая печать
    button.show()
    sys.exit(app.exec_())

#!/usr/bin/python
# -*- coding: utf-8 -*-
import sys
from PyQt4 import  QtGui,QtCore
WHAT=1

class Counter(QtGui.QPushButton):
    global WHAT
    what=WHAT
    def __init__(self, parent=None):
        super(Counter, self).__init__(parent)
        self.connect(self, QtCore.SIGNAL("clicked()"), self.myreaction)

    def myreaction(self):
        self.emit(QtCore.SIGNAL("mysignal"), self.what)

    def myprint(self,what):
        global WHAT
        what = WHAT
        print "It's myprint WHAT=%d" % what
        WHAT +=1

if __name__=="__main__":
    app = QtGui.QApplication(sys.argv)
    counter = Counter()

    QtCore.QObject.connect(counter, QtCore.SIGNAL("mysignal"), counter.myprint)

    counter.show()
    sys.exit(app.exec_())

#!/usr/bin/python
# -*- coding: utf-8 -*-
import sys
from PyQt4 import  QtGui,QtCore
WHAT=0                                     # глоб. прем. - счетчик

class Counter(QtGui.QWidget):              # класс счетчиков
    def __init__(self,*args):              # конструктор
        QtGui.QWidget.__init__(self,*args)

def myreaction():                          # реализация слота
    global WHAT
    WHAT +=1
    print "It's myreaction WHAT=",WHAT

if __name__=="__main__":
    app = QtGui.QApplication(sys.argv)
    counter=Counter()                      # создаем объект
    button = QtGui.QPushButton()           # создаем кнопку

    QtCore.QObject.connect(button, QtCore.SIGNAL("clicked()"),myreaction)

    button.show()
    sys.exit(app.exec_())