[英]How do i use a While/For loop to create classes?? (Python/PyQt)
I have created the code to create multiple classes with different class names (Ie Question1, Question2 etc.) 我已经创建了代码来创建具有不同类名的多个类(即Question1,Question2等)。
import sys
from PyQt4 import QtCore, QtGui
class StartTest(QtGui.QMainWindow):
def __init__(self, parent=None):
super(StartTest, self).__init__(parent)
self.central_widget = QtGui.QStackedWidget()
self.setCentralWidget(self.central_widget)
question1 = Question1(self)
self.central_widget.addWidget(question1)
self.central_widget.setCurrentWidget(question1)
question1.proceed.clicked.connect(self.question2)
def question2(self):
question2 = Question2(self)
self.central_widget.addWidget(question2)
self.central_widget.setCurrentWidget(question2)
i = 0
while i<2:
class Question+i(QtGui.QWidget):
def __init__(self, parent=None):
super(Question+i, self).__init__(parent)
question = QtGui.QLabel('What is 5+5?')
self.proceed = QtGui.QPushButton("Proceed")
self.Answer = QtGui.QLineEdit(self)
layout = QtGui.QFormLayout()
layout.addRow(question, self.Answer)
layout2 = QtGui.QVBoxLayout()
layout2.addLayout(layout)
layout2.addWidget(self.proceed)
self.setLayout(layout2)
print('Question'+i)
if __name__ == '__main__':
User = ''
app = QtGui.QApplication([])
window = StartTest()
window.showFullScreen()
app.exec_()
However when I write: 但是当我写:
i = 0
while i<2:
class Question+i(QtGui.QWidget):
i obtain a syntax error on the Question+i
part error, which is undertandable. 我在
Question+i
部分错误中获得语法错误,这是可理解的。 But how would i overcome this whilst still creating multiple classes with different class names??? 但是在仍然创建具有不同类名的多个类的同时,我将如何克服这个问题呢?
See this related question with answers on how to set class names dynamically. 请参阅此相关问题,并提供有关如何动态设置类名称的答案。
You need to implement a factory method. 您需要实现一种工厂方法。 For you it might look like this:
对您来说,它可能像这样:
def factory(num) :
BaseClass = QtGui.QWidget
class NewClass(BaseClass): pass
NewClass.__name__ = "factory_%s%d" % (BaseClass.__name__, num)
return NewClass
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