spot7.org logo
Home PHP C# C++ Android Java Javascript Python IOS SQL HTML Categories

Getting None type for object when running method outside of __init__


Expanding on Tim's question, when using classes, you have the class definition, a type, and then an instance of the class, the object.

createMember should be called as a method of an instance, not of the class itself (there is a type for that - a staticmethod or classmethod, and they do not have a "self").

So you need to create the instance:

m = Member()

Note - you will need the parameters to do that. If you want it to not need the parameters, that requires a bit more code. Then access that method in it:

m.createMember()

You could also call it inside _init__ (known as the constructor), where "self" is the instance:

self.createMember()

Categories : Python

Related to : Getting None type for object when running method outside of __init__
In order to fill the properties of an object, what is more effective, to send the object as parameter to a method or return it from the method?
It largely depends on your use case. With the second variant, you always create a new DataEntity object, while with the first variant, users could reuse a single instance of that class. If the DataEntity objects are rather short-lived, but a lot of them will be created, the garbage collection might get busy cleaning up all the unused objects with the second variant. With the first variant, it's u

Categories : Java
Passing an object data from JSP to Spring Controller Post Method instead of GET method
Yes you are correct you should use POST request to do any kind of DML operation on server. GET should be used for data fetch operations only. Reason is to avoid the doubly form submission which you can do with F5 or double click of submit button. You should use method=RequestMethod.POST instead of GET. See Spring MVC Post Request

Categories : Java
Any way to know if calling method should Dispose the object returned by called method
CA2000 warning is something you might be after, see documentation: If a disposable object is not explicitly disposed before all references to it are out of scope, the object will be disposed at some indeterminate time when the garbage collector runs the finalizer of the object. Because an exceptional event might occur that will prevent the finalizer of the object from running, the obj

Categories : C#
PushPlugin TypeError: Object # has no method ''exec
I can't really see, why ur solution is not working. The only thing I can provide is my working solution. There might be some redundancies or unnecessary things in there, because I myself tried 35 Versions before I got it working: First Thing is I attach to pg events in an App Initializer and register my Notification Services: Ember.Application.initializer({ name: 'phonegap', /* ...... *

Categories : Cordova
PHP How to call a method from a class while it is running?
Your "forever script" is running in its own thread regardless of anything else that's going on in the outside world. You cannot influence anything it's doing simply like that. You will need to specifically write the script to react to outside influences and offer the outside world a mechanism with which to interact with the script. There are many possibilities: the script reads the contents of a

Categories : PHP
Recently Add
Unable to Delete and redraw or Draw over plot axes based on PYQT widget state change
Generate, fill and plot a hexagonal lattice in Python
Getting a decorator with args to work with method: self does not exist
Is this function correct?
kivy adding variables to the root widget
Pandas: Generate a histogram/pivot against timeseries data
bash wrap a piped command with a python script
Selecting a combo box using selenium webdriver xpath
How to check how many calls left in AlchemyAPI? python
sklearn.ensemble.AdaBoostClassifier cannot accecpt SVM as base_estimator?
Sklearn Linear Regression - "IndexError: tuple index out of range"
How can I keep an object selected in the outliner after physically deselecting it in the 3d view?
Limiting results with Jinja (Python)
Python Flask - Which file is used to log?
ros python publisher/subscriber
Get spline fit residual from scipy.interpolate.splprep()
A linker error of Boost.Python in Visual Studio 2008
access parent methods in python
Python retreive DayOfWeek as integer
Async insertAll requests using python-api-client
django modelForm filter isn't effective?
Many numpy array manipulations in one array
How can I unit-test a method without instantiating the class?
base.html can't access {% if user.is_authenticated %}
How to cope with diacritics while trying to match with regex in Python
Data is missing after using @validate with Schema
Find out where a process writes to
kivy - getting a spinner to remember its selection
Regular expression is not working
Django - Get a QuerySet of Months and the amount of expense
© Copyright 2017 spot7.org Publishing Limited. All rights reserved.