Confused about imports and evals -- Python -

say have 2 scripts, script1 , script2.

script1 defined as:

class foo(object):     def __init__(self, name):         self.name = name  class bar(object):     def __init__(self, name):         self.name = name  def test(givenstring):     return eval(givenstring) 

and script2 defined as:

from .script1 import test  x = "foo('me')" print test(x) 

script2's print statement test(x) tells me have foo object, doesn't make sense me because imported test script1, not foo. looked @ eval documentation didn't clear me. how possible foo object created when never imported class foo?

eval() uses globals of module executed in. test 'lives' in script1 global namespace, expression executed eval() uses same namespace function , can resolve foo, bar , test.

importing function not alter namespace; globals test don't change merely being called script2. if did, imports in script1 also need imported script2, each , every function ever wanted use. incredibly impractical.

you can see globals functions import; print test.func_globals show exact namespace of script1.