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A=10
print 'A =',A

I would like to rapidly report stored values along with the variable name. In python I can do print('A=' + A) for this, which does not seem to work in Sage. Is there a command with this function or a way to fix this print statement?

Do you mean printing (instead of plotting) the matrices? (Not sure what it would mean to plot a matrix.) If you're just trying to get a floating point number to display with fewer digits, you might try something like

foo.n(digits = 3)

Unfortunately, this simple approach doesn't always give expressions of a uniform "width", in terms of the number of characters. For example:

print pi.n(digits = 3)
print (pi*100000).n(digits = 3)
print (pi*100000000).n(digits = 3)
print (pi/100000).n(digits = 3)
print (pi/100000000).n(digits = 3)

returns

3.14
314000.
3.14e8
0.0000314
3.14e-8

As an update, the quickest method of beautifying my matrices was taking jdc's advice. I'm plotting Markov Chains, which I should have mentioned earlier, however n.(digits) can be used even inside DiGraph. For example: DiGraph(My_Matrix.n(digits=3),format="weighted_adjacency_matrix")

When working with matrices of floats and plotting said matrices, the results become unreadable fast with the default accuracy. How do I only display a handful (3~4) of digits?