Python: convert matrix of ints to matrix of Decimals

Question

I have a Python matrix and due to rounding issues in later parts of the code I would like to convert it to a matrix of Decimal elements. I am using Python3. How do I do that?

My matrix is

a = [
    [0, 9, 1, 1],
    [0, 0, 1, 0],
    [0, 0, 0, 1],
    [1, 1, 1, 0]
]

Something like b = Decimal(a) which gives an error.

Will this answer help? https://stackoverflow.com/questions/7770870/numpy-array-with-dtype-decimal — Denis Rasulev, Apr 21 '21 at 13:55

score 1 · Accepted Answer · answered Apr 21 '21 at 13:59

1

Based on the great comment by Denis Rasulev this can be achieved by

b = [[Decimal(i) for i in j] for j in a]

answered Apr 21 '21 at 13:59

SCBuergel

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Python: convert matrix of ints to matrix of Decimals

1 Answers1