kwargs - Key words arguments in python function

This is a tutorial of how to use `*args` and `**kwargs`

For defining the default value of arguments that is not assigned in key words when calling the function:

def func(**keywargs):

    if 'my_word' not in keywargs:

        word = 'default_msg'

        print(word)

    else:

        word = keywargs['my_word']

        print(word)

call this by:

func()

func(my_word='love')

you'll get:

default_msg

love

read more about *args and **kwargs in python: https://www.digitalocean.com/community/tutorials/how-to-use-args-and-kwargs-in-python-3

Add more about default value if arg key is not assigned:

def make_hastie_10_2(n_samples=12000, random_state=None):

    """Generates data for binary classification used in

    Hastie et al. 2009, Example 10.2.

    The ten features are standard independent Gaussian and

    the target ``y`` is defined by::

      y[i] = 1 if np.sum(X[i] ** 2) > 9.34 else -1

    Read more in the :ref:`User Guide <sample_generators>`.

    Parameters

    ----------

    n_samples : int, optional (default=12000)

        The number of samples.

    random_state : int, RandomState instance or None (default)

        Determines random number generation for dataset creation. Pass an int

        for reproducible output across multiple function calls.

        See :term:`Glossary <random_state>`.

    Returns

    -------

    X : array of shape [n_samples, 10]

        The input samples.

    y : array of shape [n_samples]

        The output values.

    References

    ----------

    .. [1] T. Hastie, R. Tibshirani and J. Friedman, "Elements of Statistical

           Learning Ed. 2", Springer, 2009.

    See also

    --------

    make_gaussian_quantiles: a generalization of this dataset approach

    """

    rs = check_random_state(random_state)

    shape = (n_samples, 10)

    X = rs.normal(size=shape).reshape(shape)

    y = ((X ** 2.0).sum(axis=1) > 9.34).astype(np.float64, copy=False)

    y[y == 0.0] = -1.0

    return X, y

巴特西

kwargs - Key words arguments in python function

This is a tutorial of how to use `*args` and `**kwargs`

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巴特西

kwargs - Key words arguments in python function

This is a tutorial of how to use *args and **kwargs

最新文章

热门文章

This is a tutorial of how to use `*args` and `**kwargs`