一些环境基础Python版本: 3.4.2 OS: Windows 8.1
到目前为止,我怀疑this other question与我手头的问题有关,但我不知道如何复制足够多的相同条件--可能是我缺乏深入的蟒蛇知识。
复制问题的简化代码:
基类
from PySide.QtGui import *
class Interface(QWidget):
'''
Wrapper base class for GUI input QWidgets:
- buttons
- text fields
- checkboxes
- line edit
- dropdown menu (combo box)
'''
def __init__(self, parent, name, title_txt=None, qt_obj=None,
update_log_method=None):
print('Interface base class constructor has been called.') #DEBUG
self._parent = parent
self.title = None
self.name = name #also text that appears on component
self.qt_obj = qt_obj
self.inheritted_log_method = update_log_method
# don't want to create an empty text QLabel, or one with
# the text reading "None".
if title_txt:
self.title = QLabel(text=title_txt, parent=parent)
print('Interface base class constructor has been completed.') #DEBUG
def get_name(self):
return self.name
def update_log(self, message, level="INFO"):
''' '''
self.inheritted_log_method(message, level)继承类
class IFPushButton(Interface):
''' '''
def __init__(self, name, parent, icon=None, update_log_method=None):
''' '''
# print('\n\nCHECKPOINT: pre IFPushButton super()\n\n') #DEBUG
super(IFPushButton, self).__init__(
parent=parent,
name=name,
qt_obj=QPushButton(icon, name, parent),
update_log_method=update_log_method)
self.behaviors = {}
self.qt_obj.clicked.connect(self.activate)什么的把它从身上踢出来
if __name__ == '__main__':
# setup
import sys
app = QApplication(sys.argv)
qmw = QMainWindow()
qcw = QWidget() #central widget
qcl = QVBoxLayout(qcw) #central layout
# experimental
name = 'named button'
ifpb = IFPushButton(name=name, parent=None, icon=None, update_log_method=None)
print("as long a I don't touch the ifpb instance, everything seems to be okay.")
print("...but the second I do...")
qcl.addWidget(ifpb)
self.show()
print("name of created push button:", ifpb.get_name())
# proper teardown
sys.exit(app.exec_())我在一个模块中运行所有这些,interface.py,当我运行它.
C:\Path\To\Module> python interface.py
Interface base class constructor has been called.
Interface base class constructor has been completed.
as long a I don't touch the ifpb instance, everything seems to be okay.
...but the second I do...
Traceback (most recent call last):
File "c_interface.py", line 167, in <module>
qcl.addWidget(ifpb)
RuntimeError: '__init__' method of object's base class (IFPushButton) not called.让我困惑的部分是基类Intefrace中的print语句在打印时是如何被调用的--但是它仍然引发了一个RuntimeError,它说它还没有初始化,当然也没有创建应用程序窗口。我在堆栈溢出中找到的大部分相关消息都与使用super()方法初始化错误有关--但我已经检查了我的超级inits,我看到的所有信息都应该正常工作,除了上面链接的内容。
如果我能更好地理解为什么会发生这种情况,我希望我能找到一个解决这个问题的方法。任何帮助都是非常感谢的-谢谢!
在此期间,我将试图找到我可能会无意中深入复制一个C++对象.
编辑:将url包含在指向其他堆栈溢出帖子的链接中。
发布于 2015-05-08 02:23:20
需要向super类构造函数添加一个Interface调用:
def __init__(self, parent, name, title_txt=None, qt_obj=None, update_log_method=None):
super(Interface, self).__init__(parent)
...此外,您还调用了self.show(),您可能是指qmw.show()。
https://stackoverflow.com/questions/30114436
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