Given an array of array A defined as
A = [[1, 2, 3, 4], [10, 20, 30, 40], [100, 200, 300, 400]],
if print function is called
for i in range(0,3):
print A[i]
the following is the output
[1, 2, 3, 4]
[10, 20, 30, 40]
[100, 200, 300, 400].
How can I get a "prettier" output like this:
[ 1, 2, 3, 4]
[ 10, 20, 30, 40]
[100, 200, 300, 400]
??? Thank you
All you need to know is the maximum number of digits that there could be. If the number of digits is three as in your example, do this:
for i in A:
print(", ".join([str(l).rjust(3) for l in i]))
Using str(i).rjust(3) puts i right-justified in a field of width 3 where the extra characters are spaces. You could make them zeros with str(i).zfill(3), or you could make them anything you want with str(i).rjust(3, "&") for example.
Output:
1, 2, 3, 4
10, 20, 30, 40
100, 200, 300, 400
Of course, to make it applicable for more situations, you could use len(str(max(map(max, A)))) instead of hardcoding the 3.
un-pythonic. Thanks @zondo
This code will more dynamic. This will find the maximum number's length and rjust by max_len.
A = [[1, 2, 3, 4], [10, 20, 30, 40], [11100, 20033, 300, 400]]
max_len = len(str(max( max(i) for i in A)))
for i in A:
print(", ".join([str(l).rjust(max_len) for l in i]))
Why not using a numpy array for this ?
import numpy as np
print np.array(A)
[[ 1 2 3 4]
[ 10 20 30 40]
[100 200 300 400]]
You can't have those spaces in there if the record is an integer, but this code seems to split up the array nicely.
A = [1999999, 2, 3, 47678], [10, 20, 30, 40], [100, 200, 300, 400]
MaxLength=0
for i in range(0,3):
for x in A[i]:
MaxLength =len(str(x)) if MaxLength<len(str(x)) else MaxLength
for i in range(0,3):
for x in range(0,len(A[i])):
Length=MaxLength-len(str(A[i][x]))
print((" "*Length)+str(A[i][x]),end="|")
print()
If you do want, you can call this up in a definition, just do this:
def TableFormat(A):
MaxLength=0
for i in range(0,3):
for x in A[i]:
MaxLength =len(str(x)) if MaxLength<len(str(x)) else MaxLength
for i in range(0,3):
for x in range(0,len(A[i])):
Length=MaxLength-len(str(A[i][x]))
print((" "*Length)+str(A[i][x]),end="|")
print()
Then you can print the table neatly by doing TableFormat(A) with A as the array. The end="|" can be swapped for anything you want to divide the records with
Easiest way is to use two for loops
for list in A:
for element in list:
print element, '\t',
print '\n'
Try this.
