Printing arrays in matrix format

I have a python ( A

) list , and each list entry is a list that I would like to print in matrix form (for comparison with another output). I can basically accomplish this with:

print(np.array(A[i]).reshape(dim1,dim2),'\n')

...

However, I would also like to control the formatting of the output, i.e. scientific notation, decimal places, etc. In this respect I have tried

print("{0:.3f}".format(np.array(A[i]).reshape(2*n+1,2*n+1)),'\n')

which throws an error non-empty format string passed to object.__format__

.

How do I format the output and convert it to something that looks like a printable matrix?