You can use your hack class as a decorator pretty much as it’s written, though you’d likely want to choose a more appropriate name for the class. Like this: class Composable(object): def __init__(self, function): self.function = function def __call__(self, *args, **kwargs): return self.function(*args, **kwargs) def __mul__(self, other): @Composable def composed(*args, **kwargs): return self.function(other(*args, **kwargs)) return … Read more
Edit: See the second code option below (it is tested and works). The first one has some limitations. Since you can’t modify any of those functions, it appears you have to go after the XMLHttpRequest prototype. Here’s one idea (untested, but you can see the direction): (function() { var open = XMLHttpRequest.prototype.open; XMLHttpRequest.prototype.open = function(method, … Read more
Honestly, I used to use the 1st form (reopening the class), as it feels more natural, but your question forced me to do some research on the subject and here’s the result. The problem with reopening the class is that it’ll silently define a new class if the original one, that you intended to reopen, … Read more
In fact the difference between adding methods dynamically at run time and your example is huge: in your case, you just attach a function to an object, you can call it of course but it is unbound, it has no relation with the object itself (ie. you cannot use self inside the function) when added … Read more
Starting a web server for unit testing is definitely not a good practice. Unit tests should be simple and isolated, which means that they should avoid performing IO operations for example. If what you want to write are really unit tests then you should craft your own test inputs and also look into mock objects. … Read more
I believe the recommended way to start the task is as follows. python manage.py celery worker -P gevent –loglevel=INFO Gevent needs to be patched as early as possible.
Just subclass the type >>> class X(str): … def my_method(self): … return int(self) … >>> s = X(“Hi Mom”) >>> s.lower() ‘hi mom’ >>> s.my_method() Traceback (most recent call last): File “<stdin>”, line 1, in <module> File “<stdin>”, line 3, in my_method ValueError: invalid literal for int() with base 10: ‘Hi Mom’ >>> z = … Read more
If you just want to add the bye() method to the single instance g of the class Greet, you need to do: g.metaClass.bye = { println “Goodbye, $name” } g.bye() Otherwise, to add bye() to all instance of Greet (from now on), call Greet.metaClass.bye = { println “Goodbye, $name” } But you’d need to do … Read more
You can subclass the ndarray object like: from numpy import ndarray class myarray(ndarray): @property def H(self): return self.conj().T such that: a = np.random.rand(3, 3).view(myarray) a.H will give you the desired behavior. Edit: As suggested by @slek120, you can force to transpose only the last 2 axes with: self.swapaxes(-2, -1).conj() instead of self.conj().T.
In Python, there is a difference between functions and bound methods. >>> def foo(): … print “foo” … >>> class A: … def bar( self ): … print “bar” … >>> a = A() >>> foo <function foo at 0x00A98D70> >>> a.bar <bound method A.bar of <__main__.A instance at 0x00A9BC88>> >>> Bound methods have been … Read more