How do I organize the output of this code?

Question

The output of this program is a table, but it is kind of messy. How to align the different columns? Thanks

Code:

import math   

for a in range(1, 10):
    x = 3.0
    while True:
        y = (x + a/x) / 2
        if y == x:
            break
        x = y  
    sq = math.sqrt(a)
print float(a), sq, x, abs(sq - x)

Answer 1

Use str.format:

import math   

for a in range(1, 10):
    x = 3.0
    while True:
        y = (x + a/x) / 2
        if y == x:
            break
        x = y  
    sq = math.sqrt(a)
    print '{:>5} {:>5.10f} {:>5.10f} {:>5.10f}'.format(float(a), sq, x, abs(sq - x))

prints

  1.0 1.0000000000 1.0000000000 0.0000000000
  2.0 1.4142135624 1.4142135624 0.0000000000
  3.0 1.7320508076 1.7320508076 0.0000000000
  4.0 2.0000000000 2.0000000000 0.0000000000
  5.0 2.2360679775 2.2360679775 0.0000000000
  6.0 2.4494897428 2.4494897428 0.0000000000
  7.0 2.6457513111 2.6457513111 0.0000000000
  8.0 2.8284271247 2.8284271247 0.0000000000
  9.0 3.0000000000 3.0000000000 0.0000000000