# mode: run

# tag: global, nameerror

try:

    from heapq import *   # just to confuse the compiler

except ImportError:

    pass

def f(a):

    """

    Py<=3.3 gives 'global name ...', Py3.4+ only 'name ...'

    >>> f(1)   # doctest: +ELLIPSIS

    Traceback (most recent call last):

    NameError: ...name 'definitely_unknown_name' is not defined

    """

    a = f

    a = definitely_unknown_name