readonly-attribute

I want to create an object in python that has a few attributes and I want to protect myself from accidentally using the wrong attribute name. The code is as follows: class MyClass( object ) : m = None # my attribute __slots__ = ( "m" ) # ensure that object has no _m etc a = MyClass() # create one a.m = "?" # here is a PROBLEM But after running this simple code, I get a very strange error: Traceback (most recent call last): File "test.py", line 8, in <module> a.m = "?" AttributeError: 'test' object attribute 'm' is read-only Is there any wise programmer who can spare a bit of their time and

I have a class with various public properties which I allow users to edit through a property grid. For persistence this class is also serialized/deserialized to/from an XML file through DataContractSerializer. Sometimes I want to user to be able to save (serialize) changes they've made to an instance of the class. Yet at other times I don't want to allow the user to save their changes, and should instead see all the properties in the property grid as read only. I don't want to allow users to make changes that they'll never be able to save later. Similar to how MS Word will allow users to open

Using the Ace Code Editor can I lock or make readonly a segment of code but still allow other lines of code to be written or edited during a session? Here is the start of a solution: $(function() { var editor = ace.edit("editor1") , session = editor.getSession() , Range = require("ace/range").Range , range = new Range(1, 4, 1, 10) , markerId = session.addMarker(range, "readonly-highlight"); session.setMode("ace/mode/javascript"); editor.keyBinding.addKeyboardHandler({ handleKeyboard : function(data, hash, keyString, keyCode, event) { if (hash === -1 || (keyCode <= 40 && keyCode >= 37)) return

Here they say it's not supported out of the box. Do you know a way to make HTML input form fields use the 'readonly' attribute with WTForms? I assume you are talking about the <input readonly> attribute in HTML/XHTML, which is not what that discussion thread you linked is about. (the linked thread is about a lower-level issue with how to ignore passed form input) The way to set a readonly attribute (and indeed any attribute on a field) is as a keyword-arg in your template. If using Jinja, this looks like (html5): {{ form.myfield(readonly=true) }} And for XHTML or versions of WTForms older than

How to create a readonly textbox in ASP.NET MVC3, With Razor view engine ? Is there an HTMLHelper method available to do that ? Something like this ? @Html.ReadOnlyTextBoxFor(m => m.userCode) @Html.TextBoxFor(m => m.userCode, new { @readonly="readonly" }) You are welcome to make an HTML Helper for this, but this is simply just an HTML attribute like any other. Would you make an HTML Helper for a text box that has other attributes? UPDATE: Now it's very simple to add html attributes to default editor templates. Means instead of doing this: @Html.TextBoxFor(m => m.userCode, new { @readonly=