Python seems to invoke Complex's __init__ with the string '3', but complex's (the Python built-in class) __init__ with the string '3#'

ipython

In [3]: number.Complex('3')
> /Users/eryn/Code/sibilant/sibilant/number.py(51)__init__()
-> exact = exact is not None
(Pdb) c
Out[3]: (3+0j)

In [4]: number.Complex('3#')
---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-4-4dce8b9d03a9> in <module>()
----> 1 number.Complex('3#')

ValueError: complex() arg is a malformed string

In [5]:

numbers

class Number(numbers.Number):
    def __init__(self, exact=None):
        self.exact = exact

    @property
    def is_exact(self):
        if self.exact is not None:
            return self.exact
        # TODO: Number is inexact if it contains:
        #       1. a decimal point (3.14)
        #       2. an exponent (3e5)
        #       3. a # in place of a digit (34#)
        return False

    def _replace_hashes(self, value):
        if not isinstance(value, basestring):
            # Nothing to do, not a string.
            return value
        return value.replace('#', '0')


class Complex(Number, complex):
    def __init__(self, real, imag=None, exact=None):
        exact = exact is not None
        import pdb; pdb.set_trace()

        real_inexact = self._replace_hashes(real)
        exact = (real == real_inexact)
        if imag is None:
            complex.__init__(self, real_inexact)
        else:
            imag_inexact = self._replace_hashes(imag)
            exact = exact and (imag == imag_inexact)
            complex.__init__(self, real_inexact, imag_inexact)
        Number.__init__(self, exact)