101-lazy_matrix_mul.txt

# 101-lazy_lazy_matrix_mul.txt
# Run: python3 -m doctest -v ./tests/101-lazy_lazy_matrix_mul.txt

Import function from the module:

    >>> lazy_matrix_mul = __import__('101-lazy_matrix_mul').lazy_matrix_mul

Multiply two normal matrices

    >>> lazy_matrix_mul([[12, 9], [1, 45]], [[87, 34], [45, 23]])
    array([[1449,  615],
     	   [2112, 1069]])

Multiply normal matrices

    >>> lazy_matrix_mul([[7, 6]], [[5, 4], [3, 2]])
    array([[53, 40]])

Multiply two 3D matrices

    >>> list1 = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
    >>> list2 = [[18, -17, 16], [15, -14, 13], [12, -11, 10]]
    >>> lazy_matrix_mul(list1, list2)
    array([[  84,  -78,   72],
           [ 219, -204,  189],
           [ 354, -330,  306]])

Multiply normal matrices

    >>> lazy_matrix_mul([[13, 25, 17]], [[30], [15], [48]])
    array([[1581]])

Pass None

    >>> lazy_matrix_mul(None, None)
    Traceback (most recent call last):
    	      ...
    TypeError: Object arrays are not currently supported

Pass None as matrix attribute

    >>> lazy_matrix_mul([[40, 4]], None)
    Traceback (most recent call last):
    	      ...
    TypeError: Object arrays are not currently supported

Pass tuple as matrix attribute

    >>> lazy_matrix_mul((1, 2, 3), [[4.5], [6.7], [8.9]])
    array([44.6])

Pass string as matrix attribute

    >>> lazy_matrix_mul([[23, 43], [64, 74]], "Hannibal")
    Traceback (most recent call last):
    	      ...
    ValueError: Scalar operands are not allowed, use '*' instead

Pass list of tuples

   >>> lazy_matrix_mul([(1, 5, 10)], [(1), (5)])
   Traceback (most recent call last):
   	     ...
   ValueError: shapes (1,3) and (2,) not aligned: 3 (dim 1) != 2 (dim 0)

Pass list of strings

   >>> lazy_matrix_mul([[]], ["Mejbri"])
   Traceback (most recent call last):
   	     ...
   ValueError: shapes (1,0) and (1,) not aligned: 0 (dim 1) != 1 (dim 0)

Pass empty matrix

    >>> lazy_matrix_mul([], [[1]])
    Traceback (most recent call last):
    	      ...
    ValueError: shapes (0,) and (1,1) not aligned: 0 (dim 0) != 1 (dim 0)

Pass empty matrix attribute

    >>> lazy_matrix_mul([[1, 2]], [[]])
    Traceback (most recent call last):
    	      ...
    ValueError: shapes (1,2) and (1,0) not aligned: 2 (dim 1) != 1 (dim 0)

Pass matrix with a list of strings

    >>> lazy_matrix_mul([[1, '1', 1], ['2', 2, '2']], [[3], [3]])
    Traceback (most recent call last):
    	      ...
    ValueError: shapes (2,3) and (2,1) not aligned: 3 (dim 1) != 2 (dim 0)

Pass a string as matrix attribute

    >>> lazy_matrix_mul([[8, 9, 10], [11, 12, 13]], [[14], ['15'], [316]])
    Traceback (most recent call last):
    	      ...
    TypeError: invalid data type for einsum

Pass empty list as part of matrix attributes

    >>> lazy_matrix_mul([[2, 1, 12], [], [4, 1, 14]], [[2], [3], [8]])
    Traceback (most recent call last):
    	      ...
    ValueError: setting an array element with a sequence.

Pass matrix with unmatched sizes

    >>> lazy_matrix_mul([[2, 4, 6], [3, 6, 9]], [[1], [2, 3]])
    Traceback (most recent call last):
    	      ...
    ValueError: setting an array element with a sequence.

Pass matrices that cannot be multiplied

    >>> lazy_matrix_mul([[5, 2, 3], [7, 13, 2], [1, 0, 3]], [[2, 3], [6, 9]])
    Traceback (most recent call last):
    	      ...
    ValueError: shapes (3,3) and (2,2) not aligned: 3 (dim 1) != 2 (dim 0)

Pass only one argument to be multiplied

    >>> lazy_matrix_mul([[31, 32]])
    Traceback (most recent call last):
    	            ...
    TypeError: lazy_matrix_mul() missing 1 required positional argument: 'm_b'

Pass nothing

    >>> lazy_matrix_mul()
    Traceback (most recent call last):
    	            ...
    TypeError: lazy_matrix_mul() missing 2 required positional arguments: 'm_a' and 'm_b'