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Comment by aidos | Hacker News Reader

Just been reading up on this. Python has sort of read only closures where the free variables are stored against the functions. You can't alter a variable inside the closure like you can in JS. Personally, I don't mind - I'd rather have a better idea of which scopes are changing which information, but I don't think they're considered "true closures."

More over here - http://stackoverflow.com/a/23558809/171450

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This is incorrect for at least python 3.x

I.e.,

  Python 3.4.3 (default, Apr  7 2015, 08:05:21) 
  >>> def mk_generator(initial):
  ...    var = initial
  ...    def increment(count=1):
  ...       nonlocal var
  ...       var += count
  ...       return var
  ...    return increment
  ... 
  >>> a = mk_generator(3)
  >>> b = mk_generator(10)
  >>> a(1)
  4
  >>> b
  <function mk_generator.<locals>.increment at 0x1040a7d08>
  >>> b()
  11
  >>> b()
  12
  >>> a(3) 
  7

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