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Get Class In Python Decorator

In this code: def online_only(func, self): def f(*args, **kwargs): if self.running: return func(*args, **kwargs) else: return False

Solution 1:

self is passed as the first parameter to the wrapping function, so just treat the first parameter specially in f:

def online_only(func):
    def f(self, *args, **kwargs):
        if self.running:
            return func(self, *args, **kwargs)
        else:
            return False
    return f

Solution 2:

  1. You can not have two arguments in def online_only(func, self) ? it will raise TypeError, so change it to def online_only(func)
  2. The first argument to wrapped function would be self, you can just use that e.g.

def online_only(func):
    def f(self):
        if self.running:
            return func(self)
        else:
            return False
    return f

class VM(object):
    @property
    def running(self):
        return True

    @property
    @online_only
    def diskinfo(self):
        return True

print VM().diskinfo

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