def num_display(self,arg):

    # Non-numpy variables are printed using the system default
    if type(arg) != ArrayType:
        self._display(arg)
        return
    # Otherwise, we do work.
    format = __IPYTHON__.runtime_rc.numarray_print_format
    print('NumPy array, format:',format)
    # Here is where all the printing logic needs to be implemented
    print(arg) # nothing yet :)
Use this to remove columns that don't exist in meta
dataset/ETHPy150Open ipython/ipython-py3k/IPython/deathrow/numeric_formats.py/num_display--crossover with--dataset/ETHPy150Open frappe/frappe/frappe/model/meta.py/trim_tables