如何组织此代码的输出？ [复制]

Question

这个程序的输出是一个表格，但是有点乱。如何对齐不同的列？谢谢

代码：

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

使用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))

打印

  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