attributes – Page 23

Getting attributes of a class

October 22, 2022 by Tarik

Try the inspect module. getmembers and the various tests should be helpful. EDIT: For example, class MyClass(object): a=”12″ b = ’34’ def myfunc(self): return self.a >>> import inspect >>> inspect.getmembers(MyClass, lambda a:not(inspect.isroutine(a))) [(‘__class__’, type), (‘__dict__’, <dictproxy {‘__dict__’: <attribute ‘__dict__’ of ‘MyClass’ objects>, ‘__doc__’: None, ‘__module__’: ‘__main__’, ‘__weakref__’: <attribute ‘__weakref__’ of ‘MyClass’ objects>, ‘a’: ’34’, ‘b’: … Read more

Are complex expressions possible in ng-hide / ng-show?

October 21, 2022 by Tarik

Use a controller method if you need to run arbitrary JavaScript code, or you could define a filter that returned true or false. I just tested (should have done that first), and something like ng-show=”!a && b” worked as expected.

Get all Attributes from a HTML element with Javascript/jQuery

October 20, 2022 by Tarik

If you just want the DOM attributes, it’s probably simpler to use the attributes node list on the element itself: var el = document.getElementById(“someId”); for (var i = 0, atts = el.attributes, n = atts.length, arr = []; i < n; i++){ arr.push(atts[i].nodeName); } Note that this fills the array only with attribute names. If … Read more

Extracting an attribute value with beautifulsoup

October 18, 2022 by Tarik

.find_all() returns list of all found elements, so: input_tag = soup.find_all(attrs={“name” : “stainfo”}) input_tag is a list (probably containing only one element). Depending on what you want exactly you either should do: output = input_tag[0][‘value’] or use .find() method which returns only one (first) found element: input_tag = soup.find(attrs={“name”: “stainfo”}) output = input_tag[‘value’]

What’s the purpose of the HTML “nonce” attribute for script and style elements?

October 13, 2022 by Tarik

The nonce attribute lets you to “whitelist” certain inline script and style elements, while avoiding use of the CSP unsafe-inline directive (which would allow all inline script and style), so you still retain the key CSP feature of disallowing inline script/style in general. So the nonce attribute is way to tell browsers the inline contents … Read more

What is the point of noreturn?

October 11, 2022 by Tarik

The noreturn attribute is supposed to be used for functions that don’t return to the caller. That doesn’t mean void functions (which do return to the caller – they just don’t return a value), but functions where the control flow will not return to the calling function after the function finishes (e.g. functions that exit … Read more

Iterate over object attributes in python [duplicate]

October 11, 2022 by Tarik

Assuming you have a class such as >>> class Cls(object): … foo = 1 … bar=”hello” … def func(self): … return ‘call me’ … >>> obj = Cls() calling dir on the object gives you back all the attributes of that object, including python special attributes. Although some object attributes are callable, such as methods. … Read more

Python function attributes – uses and abuses [closed]

October 10, 2022 by Tarik

I typically use function attributes as storage for annotations. Suppose I want to write, in the style of C# (indicating that a certain method should be part of the web service interface) class Foo(WebService): @webmethod def bar(self, arg1, arg2): … then I can define def webmethod(func): func.is_webmethod = True return func Then, when a webservice … Read more

Get Enum from Description attribute [duplicate]

October 8, 2022 by Tarik

public static class EnumEx { public static T GetValueFromDescription<T>(string description) where T : Enum { foreach(var field in typeof(T).GetFields()) { if (Attribute.GetCustomAttribute(field, typeof(DescriptionAttribute)) is DescriptionAttribute attribute) { if (attribute.Description == description) return (T)field.GetValue(null); } else { if (field.Name == description) return (T)field.GetValue(null); } } throw new ArgumentException(“Not found.”, nameof(description)); // Or return default(T); } } … Read more

Set attribute without value

October 7, 2022 by Tarik

The attr() function is also a setter function. You can just pass it an empty string. $(‘body’).attr(‘data-body’,”); An empty string will simply create the attribute with no value. <body data-body> Reference – http://api.jquery.com/attr/#attr-attributeName-value attr( attributeName , value )