def zeros(r, c=None, cls=None):
    if cls is None:
        from .dense import Matrix as cls
    return cls.zeros(r, c)
Returns the index of the given field name.
dataset/ETHPy150Open sympy/sympy/sympy/matrices/dense.py/zeros--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/contrib/gis/gdal/feature.py/Feature.index