CODEWITHSUNDEEP
pythonpython-2.7numpymatrix
naz
naz

Reputation: 2072

Returning only one boolean statement if two matrices identical

Suppose there is a matrix A and a matrix B. Is there a logical statement that can return only one value, either True or False based on whether all elements of A are identical to all elements in B?

For example A = array([[1, 0, 0],[0, 1, 0]]) and B = array([[1, 0, 0],[0, 1, 0]]), A == B returns True and False per element of every row and every column

Upvotes: 1

Views: 344

Answers (1)

shx2
shx2

Reputation: 64338

Use np.array_equal.

Also, you can apply .all() to the equality-bool-array you got by comparing A==B, like this:

(A==B).all()

The latter is slightly less efficient than the former (creates a temporary bool array), but just as common.

If comparing floats, where you typically want the value to be close but not necessarily identical, use np.allclose.

Upvotes: 3

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