How to get the range of valid Numpy data types?
You can use numpy.iinfo(arg).max to find the max value for integer types of arg, and numpy.finfo(arg).max to find the max value for float types of arg.
>>> numpy.iinfo(numpy.uint64).min0>>> numpy.iinfo(numpy.uint64).max18446744073709551615L>>> numpy.finfo(numpy.float64).max1.7976931348623157e+308>>> numpy.finfo(numpy.float64).min-1.7976931348623157e+308iinfo only offers min and max, but finfo also offers useful values such as eps (the smallest number > 0 representable) and resolution (the approximate decimal number resolution of the type of arg).