gobal var inside class without notice???

[ajikoe at gmail.com]

I have code like this:

class A:
  def __init__(self,j):
    self.j = j

  def something(self):
    print self.j
    print i      # PROBLEM is here there is no var i in class A but it
works ???

if __name__ == '__main__':
  i = 10
  a = A(5)
  a.something()

I don't define global i but it will takes var i from outside of class
A.

Can somebody explain this ???

pujo