numpy.promote_types(type1, type2) Returns the data type with the smallest size and smallest scalar kind to which both type1
class numpy.format_parser(formats, names, titles, aligned=False, byteorder=None)
numpy.find_common_type(array_types, scalar_types)
class numpy.MachAr(float_conv=, int_conv=, float_to_float=, float_to_str= at 0x49c2ce2c>, title='Python floating point number')
numpy.issubdtype(arg1, arg2)
numpy.mintypecode(typechars, typeset='GDFgdf', default='d')
numpy.sctype2char(sctype)
class numpy.finfo
numpy.issubsctype(arg1, arg2)
class numpy.dtype
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