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pandas.api.extensions.ExtensionArray.astype

ExtensionArray.astype(self, dtype, copy=True) [source]

Cast to a NumPy array with ‘dtype’.

Parameters:
dtype : str or dtype

Typecode or data-type to which the array is cast.

copy : bool, default True

Whether to copy the data, even if not necessary. If False, a copy is made only if the old dtype does not match the new dtype.

Returns:
array : ndarray

NumPy ndarray with ‘dtype’ for its dtype.

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https://pandas.pydata.org/pandas-docs/version/0.25.0/reference/api/pandas.api.extensions.ExtensionArray.astype.html