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  1.  
  2. # method wrapper 1
  3. class Foo:
  4. _methods = {...}
  5. def __getattr__(self, name):
  6. if name in _methods:
  7. return getattr(self._wrapped, name)
  8. raise AttributeError(name)
  10. # method wrapper 2
  11. class Foo:
  12. pass
  14. def add_wrapper(cls, method):
  15. def wrapper(self, *args, **kwargs):
  16. return getattr(self._wrapped, method)(*args, **kwargs)
  17. setattr(cls, method, wrapper)
  19. for method in methods:
  20. add_wrapper(Foo, method)
  22. # method wrapper 3
  23. class Foo:
  24. pass
  26. def add_wrapper(cls, method):
  27. code = text.dedent("""
  28. def wrapper(self, *args, **kwargs):
  29. return self._wrapped.{}(*args, **kwargs)
  30. """)
  31. ns = {}
  32. exec(code, ns)
  33. setattr(cls, method, ns["wrapper"])
  35. for method in methods:
  36. add_wrapper(Foo, methods)
  37.  
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