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# NumPy | iinfo method

schedule Aug 12, 2023
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NumPy's `iinfo(~)` method returns information about a particular NumPy integer data type. Information includes the number of bits occupied by that data type, and the maximum and minimum limits of supported values.

# Parameters

1. `type` | `dtype`

The integer data type to retrieve information about.

# Return value

A `<class 'numpy.iinfo'>` object with three attributes:

• `bits`: number of bits occupied by the provided integer data type

• `min`: minimum supported value of the provided integer data type

• `max`: maximum supported value of the provided integer data type

# Examples

## Basic usage

To retrieve information on the `int32` data type:

``` np.iinfo(np.int32) iinfo(min=-2147483648, max=2147483647, dtype=int32) ```

## bits

To retrieve the number of bits occupied by `int32` data type:

``` np.iinfo(np.int32).bits 32 ```

## min

To retrieve the minimum allowed value for `int32`:

``` np.iinfo(np.int32).min -2147483648 ```

## max

To retrieve the maximum allowed value for `int32`:

``` np.iinfo(np.int32).max 2147483647 ```
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