a = {}

assert eval("globals()", a) is a

assert eval("locals()", a) is a

assert eval("globals()") is globals()

assert eval("locals()") is locals()

assert eval("globals()", None, a) is globals()

assert eval("locals()", None, a) is a

b = {}

assert eval("globals()", a, b) is a

assert eval("locals()", a, b) is b

c = {"__builtins__" : {"int": 5, "eval": eval, "globals": globals}}

assert eval("int", c) == 5

assert eval("(lambda: int)()", c) == 5

assert eval("eval(\"int\")", c) == 5

assert eval("globals().get(\"int\")", c) is None

class A:

def keys(self): return ()

def __getitem__(self, val): raise KeyError

assert eval("locals()", None, A()).__class__ is A

def a(): return 5

assert eval(a.__code__) == 5