Print the contents of a square 2d array as a nicely formatted string

PrettyPrint2DArray.py

# Prints a square 2d array nicely with spacing of elements
# Modify frmt for the number of elements in each row, as well as the matrix itself of course

newline, empty, frmt = "\n", "", "{:4}"

print(newline.join([empty.join([frmt.format(element) for element in row])
                    for row in matrix]))