Python print string alignment

Question

I am printing some values in a loop in Python. My current output is as follows:

0  Data Count:  249   7348   249   4469   2768   261   20   126
1  Data Count:  288   11   288   48     2284   598   137      408 
2  Data Count:  808   999   808   2896   32739   138   202   678
3  Data Count:  140   26   140   2688   8054   884   433      987

What I'd like is for all values in each column to align, despite differing character/number counts in some, to make it easier to read.

The pseudo code behind this is as follows:

for i in range(0,3): 

    print i, " Data Count: ", Count_A, " ", Count_B, " ", Count_C, " ", Count_D, " ", Count_E, " ", Count_F, " ", Count_G, " ", Count_H

Thanks in advance everyone!

andreihondrari · Accepted Answer · 2018-12-16 13:02:10Z

5

You could use format string justification:

from random import randint

for i in range(5):
    data = [randint(0, 1000) for j in range(5)]
    print("{:5} {:5} {:5} {:5}".format(*data))

output:

   92   460    72   630
  837   214   118   677
  906   328   102   320
  895   998   177   922
  651   742   215   938

According to the format specification from Python docs

edited Dec 16, 2018 at 13:02

answered Dec 16, 2018 at 12:56

andreihondrari

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1 Comment

Pyy Over a year ago

Thanks for this. Playing with the format() function is certainly helping.

ivan_pozdeev · Accepted Answer · 2018-12-17 12:02:54Z

0

With the % string formatting operator, the minimum width of output is specified in a placeholder as a number before the data type (the full format of a placeholder is %[key][flags][width][.precision][length type]conversion type). If the result is shorter, it will be left-padded to the specified length:

from random import randint

for i in range(5):
    data = [randint(0, 1000) for j in range(5)]
    print("%5d %5d %5d %5d %5d" % tuple(data))

gives:

  946   937   544   636   871
  232   860   704   877   716
  868   849   851   488   739
  419   381   695   909   518
  570   756   467   351   537

_{(code adapted from @andreihondrari's answer)}

edited Dec 17, 2018 at 12:02

answered Dec 16, 2018 at 14:11

ivan_pozdeev

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