numpy.copyto()

numpy.copyto(dst, src, casting='same_kind', where=None)

Copies values from one array to another, broadcasting as necessary.

Raises a TypeError if the casting rule is violated, and if where is provided, it selects which elements to copy.

New in version 1.7.0.

Parameters:

Parameters:	dst : ndarray The array into which values are copied. src : array_like The array from which values are copied. casting : {?no?, ?equiv?, ?safe?, ?same_kind?, ?unsafe?}, optional Controls what kind of data casting may occur when copying. ?no? means the data types should not be cast at all. ?equiv? means only byte-order changes are allowed. ?safe? means only casts which can preserve values are allowed. ?same_kind? means only safe casts or casts within a kind, like float64 to float32, are allowed. ?unsafe? means any data conversions may be done. where : array_like of bool, optional A boolean array which is broadcasted to match the dimensions of `dst`, and selects elements to copy from `src` to `dst` wherever it contains the value True.

dst : ndarray

The array into which values are copied.

src : array_like

The array from which values are copied.

casting : {?no?, ?equiv?, ?safe?, ?same_kind?, ?unsafe?}, optional

Controls what kind of data casting may occur when copying.

?no? means the data types should not be cast at all.
?equiv? means only byte-order changes are allowed.
?safe? means only casts which can preserve values are allowed.
?same_kind? means only safe casts or casts within a kind, like float64 to float32, are allowed.
?unsafe? means any data conversions may be done.

where : array_like of bool, optional

A boolean array which is broadcasted to match the dimensions of dst, and selects elements to copy from src to dst wherever it contains the value True.

Links:

https://docs.scipy.org/doc/numpy-1.11.0/reference/generated/numpy.copyto.html

doc_NumPy

2017-01-10 18:13:08

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