"""bug report"""

class Alias(object):
    """\
A decorator to track functions via special names
that aren't limited to Python's naming rules.
"""

    # Class data
    _dict = {}

    def __init__(self, str=None):
        self.s = str

    def __call__(self, func):
        if self.s:
            str = self.s
        else:
            str = func.__name__
        self._dict[str] = func
        return func

    @classmethod
    def __getitem__(self, str):
        return self._dict[str]

@Alias("f'")
def f_prime():
    pass

print Alias.__getitem__("f'")
print Alias["f'"]