pandas.api.extensions.ExtensionArray.astype
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ExtensionArray.astype(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/0.23.4/generated/pandas.api.extensions.ExtensionArray.astype.html