ma.masked does not have fill_value attribute

[abalkin]

>>> np.ma.masked.fill_value
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "numpy/ma/core.py", line 3353, in get_fill_value
    if self._fill_value is None:
AttributeError: 'MaskedConstant' object has no attribute '_fill_value'

and as a consequence

>>> np.ma.masked.filled()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "numpy/ma/core.py", line 3442, in filled
    fill_value = self.fill_value
  File "numpy/ma/core.py", line 3353, in get_fill_value
    if self._fill_value is None:
AttributeError: 'MaskedConstant' object has no attribute '_fill_value'

[keltonhalbert]

I'm having a similar problem when passing masked values through to functions.

[twiecki]

Just ran into the same issue.

[eric-wieser]

This is fixed in 1.14-dev, and perhaps earlier:

>>> np.ma.masked.fill_value
1e+20