getattr

I want to know what is the best way to map the string to a function. so far I know I can use: globals()[func_string] sys.modules[__name__] funcs_dictionary["func_string" : func] Here is the code: >>> def foo(arg): ... print "I'm foo: %s" % arg ... >>> def bar(arg): ... print "I'm bar: %s" % arg ... >>> >>> foo <function foo at 0xb742c7d4> >>> bar <function bar at 0xb742c80c> >>> globals()[func_string]: >>> def exec_funcs_globals(funcs_string): ... for func_string in funcs_string: ... func = globals()[func_string] ... func("from globals() %s" % func) ... >>> exec_funcs_globals(["foo", "bar"]) I

I want to redefine an object's get function so that I can intercept when any attribute is requested. Using the getattr function, it doesn't catch when existing variables (eg. attr1 in this case) are requested. Is there a way around this, so I can run a function when attr1 is requested? class Test(object): attr1 = 1 def __init__(self): self.attr2 = 1 def __getattr__(self, attr): print 'GETATTR', attr a = Test() a.attr1 a.attr2 a.attr3 Output: GETATTR attr3 I'd like to see GETATTR attr1 and GETATTR attr2 in the output too. It's not a matter of class or instance variables. It's a matter of

In python, calling XML-RPC methods involves invoking methods on a proxy object: from xmlrpclib import ServerProxy print ServerProxy('https://example.com/rpc').api.hello_there('John') In some other languages, like perl, you pass your method name as a method parameter. use Frontier::Client; $p = Frontier::Client->new(url => 'https://example.com/rpc'); $result = $p->call('api.hello_there', 'John'); print $result; Is there a way to invoke XML-RPC methods by name, as strings, in Python? Just use getattr , as with any Python object. func = getattr(ServerProxy('https://example.com/rpc'), "api.hello

How can I modify the classes below to make them pickeable? This question: How to make a class which has __getattr__ properly pickable? is similar but refer to wrong exception in the use of getattr . This other question seems to provide meaningful insight Why does pickle.dumps call __getattr__? , however it fails to provide an example, and I honestly cannot understand what I am suppose to implement. import pickle class Foo(object): def __init__(self, dct): for key in dct: setattr(self, key, dct[key]) class Bar(object): def __init__(self, dct): for key in dct: setattr(self, key, dct[key]) def _

I was wondering if there was some way in PHP to duplicate some of the magic of Python attribute/key access. I use a Mongo ORM class written by Steve Lacey called Minimongo in which he utilizes the __getattr__ and __getitem__ to reroute key and attribute flavored access and preserve the 'document-oriented' nature of Mongo. val = doc.foo and val = doc['foo'] become equivalent. I was wondering if there is a similar interface in PHP that would allow the changing of how object access is handled for a class that inherits from it. I looked through the STL and couldn't find one that filled suit. It

I've seen examples online of people using __getattr__ with Django models, but whenever I try I get errors. (Django 1.2.3) I don't have any problems when I am using __getattr__ on normal objects. For example: class Post(object): def __getattr__(self, name): return 42 Works just fine... >>> from blog.models import Post >>> p = Post() >>> p.random 42 Now when I try it with a Django model: from django.db import models class Post(models.Model): def __getattr__(self, name): return 42 And test it on on the interpreter: >>> from blog.models import Post >>> p = Post() ERROR: An unexpected error