monkeypatching

I need to monkey-patch my library to replace an instance of a symbol, and it's getting referenced by some function closures. I need to copy those functions (since I also need access to original unpatched version of the function as well), but __closure__ is immutable, and I can't copy.copy it, so how can I create new closure cells objects in Python 2.7? I for example given this function def f(): def incorrectfunction(): return 0 def g(): return incorrectfunction() return g def correctfunction(): return 42 func = f() patched_func = patchit(f) # replace "incorrectfunction" print func(), patched

I'm hitting an API in python through requests' Session class. I'm making GET & POST method call using requests.Session(). On every call(GET/POST) failure, I want to notify another process. I can do this by creating a utility method as follows: s = request.Session() def post(): try: s.post(URL,data,headers) except: notify_another_process() And call this method instead of requests.Session().post directly. But, I want to monkeypatch this code to requests.Session().post and want the additional functionality of notifying the other process in the requests.Session().post method call itself. How can I

This question already has answers here : Pointers to static methods in Python (3 answers) Closed 6 years ago . While it's fairly simple to monkeypatch instance methods to classes, e.g. class A(object): pass def a(self): print "a" A.a = a doing this with another class's @staticmethod à la class B(object): @staticmethod def b(): print "static b" A.b = B.b results in A.b() yielding a TypeError : unbound method b() must be called with A instance as first argument (got nothing instead) Make A.b a static method and you should be fine: A.b = staticmethod(B.b) 来源： https://stackoverflow.com/questions

I have a module with a function (call it a() ) that calls another function defined in the same module (call it __b() ). __b() is a function which speaks to a website via urllib2 and gets some data back. Now I'm trying to test a() , but of course would rather not have my unit tests speak to the public internet. Thus, I'm thinking if I can monkey patch __b() with a function which returns canned data, then I can write the tests for a() . To be more concrete, my module looks kinda like: def a(): return __b("someval") def __b(args): return something_complex_with_args So now I want to test a() , but

I am having an issue monkey-patching part of ActiveJobs. I have the following code in config/initializers/extensions/arguements.rb module ActiveJob module Arguments TYPE_WHITELIST = [ Date, DateTime, Time, NilClass, Fixnum, Float, String, TrueClass, FalseClass, Bignum ] end end Basically, I am trying to add basic support for Date/Time objects for use in the ActiveJob created by ActionMailer#deliver_later Upon loading the rails app I can see my whitelist is loaded, however when I call the deliver_later method on a mailer the original whitelist overrides my patch. #List is correct when app loads

This was asked 8 years ago here and since then 8 years have passed. I wanted to ask this question again to see if anyone has developed a framework, tool or library that does monkey patching. Basically what I need it for is a java application that I applied my own patch to. Since this project is maintained by another team I want to be able to keep/apply any patch I make, to the patches they make. Rich There are a number of techniques that might be applicable here, but your question is too vague to narrow them down to a single answer. "Monkey patching" in the literal sense that it is used in