init

问题 This question already has answers here : What __init__ and self do on Python? (18 answers) Closed 6 years ago . While reading the code of OpenStack and I encountered this. A class named 'Service' inherits the base class 'object', and then in Service's __init__() method, object's __init__ is called. The related code looks like this: the class definition: class Service(object): and Service's init method definition: def __init__(self, host, binary, topic, manager, report_interval=None, periodic

问题 I want to define a constant that should be available in all of the submodules of a package. I've thought that the best place would be in in the __init__.py file of the root package. But I don't know how to do this. Suppose I have a few subpackages and each with several modules. How can I access that variable from these modules? Of course, if this is totally wrong, and there is a better alternative, I'd like to know it. 回答1: You should be able to put them in __init__.py . This is done all the

问题 I want to define a constant that should be available in all of the submodules of a package. I've thought that the best place would be in in the __init__.py file of the root package. But I don't know how to do this. Suppose I have a few subpackages and each with several modules. How can I access that variable from these modules? Of course, if this is totally wrong, and there is a better alternative, I'd like to know it. 回答1: You should be able to put them in __init__.py . This is done all the

问题 I have a class with an __init__ function. How can I return an integer value from this function when an object is created? I wrote a program, where __init__ does command line parsing and I need to have some value set. Is it OK set it in global variable and use it in other member functions? If so how to do that? So far, I declared a variable outside class. and setting it one function doesn't reflect in other function ?? 回答1: __init__ is required to return None. You cannot (or at least shouldn't

问题 Can python create a class that can be initialised with an instance of the same class object? I've tried this: class Class(): def __init__(self,**kwargs): print self self = kwargs.get('obj',self) print self if not hasattr(self,'attr1'): print 'attr1' self.attr1 = kwargs.pop('attr1',[]) if not hasattr(self,'attr2'): print 'attr2' self.attr2 = kwargs.pop('attr2',[]) print self self.attr1 = kwargs.pop('attr1',self.attr1) self.attr2 = kwargs.pop('attr2',self.attr2) print self.attr1 print self

问题 Maybe trough PortletConfig in init(PortletConfig) The thing is that using ((PortletConfigImpl) portletConfig).getPortletId(); is not allowed anymore because adding portal-impl.jar in package.properties gives throws an exception when trying to execute build ant target, saying that this is not allowed anymore For companyID I directly have no idea where to start. I am using currently long companyId = CompanyLocalServiceUtil.getCompanies().get(0).getCompanyId(); but as soon as I got more than one

问题 In the book Embedded Android, it says In init.rc, only an action results in the execution of commands. Service declarations only serve to describe services, they do not actually start anything... (page 246). So, where are the Android system services (e.g., servicemanager, vold) started? I thought they were started in init.rc by the following lines. But according to the book, I was wrong. service servicemanager \/system/bin/servicemanager service vold /system/bin/vold 回答1: I found the answer.

问题 I need to create a daemon process which should be started through init.d. I have experience of creating the package and installing it with appropriate start/stop scripts managed through init.d. However recently it is being managed through systeemd. Please let me know if there is basic tutorial to understand it and how to package so that installation of RPM should be as per systemd framework. 回答1: Everything you need should be here on Fedora's page, under Packaging:Systemd. 来源： https:/

问题 The following program simulates a traffic light system with some buttons. The buttons appear correctly, but if I'm trying to call the method to create/change the LEDs, it ends up in the wrong method. Here's the important part of the code: class GUI (threading.Thread): def __init__(self, num): threading.Thread.__init__(self) def run(self): global window window = Tk() window.title('Ampel GUI') window = Canvas(window, width=400, height=200) window.pack() button1 = Button(window, text="Press",

问题 I have an Objective-C category used to customise UIStoryboard's '+ (UIStoryboard *)storyboardWithName:(NSString *)name'. It is used to determine which storyboard file to call when dealing with multiple devices. Now I need to change it to Swift. It seems that I need to create a " Swift Extension ", but am having issues getting it to work. Here is what I have: extension UIStoryboard { convenience init(name: String, storyboardBundleOrNil: NSBundle?) { var storyboard: UIStoryboard? var