Published May 25, 2022
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The .reshape() method rearranges the data in an ndarray into a new shape. The new shape must be compatible with the old one, though an index of -1 can be used to infer one dimension.



Where newshape can be an integer or a tuple representing the size of the new array. If a dimension is -1, that dimension will be inferred from the size of the original array.

Unlike the built-in NumPy function .reshape(), dimensions for this method can also be passed as separate arguments: i.e. array.reshape(2,3) is the same as array.reshape((2,3)).

If possible, the ndarray returned will be a view of the original ndarray‘s data.


The following example creates an ndarray then uses .reshape() to change its dimensions.

import numpy as np
nd1 = np.array([[1,2,3],[4,5,6]])

This produces the following output:

[[1 2 3]
[4 5 6]]
[[1 2]
[3 4]
[5 6]]

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