vomit.py

import inspect

__name__ = inspect.__name__
globals()["stack"] = inspect.stack()[0][0].f_globals[(__file__ + __name__)[len(__file__):]].stack()[0]
__file__, __name__ = [], "__builtins__"

for val, key in (("chr", "int"), ("any", "sum"), ("int", "chr")):
    print(val, key, "??", [])
    stack[0].f_locals["()"] = inspect.stack()[0][0].f_globals["__builtins__"].__dict__[val]
    oops = vars()[repr(tuple())]
    vars(stack.__getitem__(len(__file__)).f_globals[str(repr(__name__))[1:-1]])["list"] = vars(__builtins__)[key]
    setattr(stack[0].f_globals[str(__name__)], key, oops)
    globals()[val] = list

"""
All of the above achieves the same as:
chr, any, int = int, sum, chr
"""