__import__ oddity

import os


FOO = None

class Foo(object):
    this = None

    def __init__(self):
        Foo.this = self
        global FOO
        FOO = self
        print "self: %s" % self
        print "this: %s" % Foo.this
        print "FOO : %s" % FOO


def main():
    os.system('clear')

    mod = __import__('vars')
    klass = getattr(mod, 'Foo')
    foo = klass()
    print Foo.this
    print FOO

    print "-" * 20
    foo = Foo()
    print Foo.this
    print FOO


if __name__ == '__main__':
    main()

output

self: <vars.Foo object at 0x7fc5825dedd0>
this: <vars.Foo object at 0x7fc5825dedd0>
FOO : <vars.Foo object at 0x7fc5825dedd0>
None
None
--------------------
self: <__main__.Foo object at 0x7fc580e91f10>
this: <__main__.Foo object at 0x7fc580e91f10>
FOO : <__main__.Foo object at 0x7fc580e91f10>
<__main__.Foo object at 0x7fc580e91f10>
<__main__.Foo object at 0x7fc580e91f10>