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Top Forums UNIX for Beginners Questions & Answers How to make second file print down the whole first file? Post 303038325 by bigvito19 on Friday 30th of August 2019 11:53:19 AM
Old 08-30-2019
How to make second file print down the whole first file?

Using Python

I have 2 text files (big files over 1gb) that opens side by side on the same line in terminal, but I want the file on the right to print down the other file while the file on the left is stationary or displayed all at once. I want to print text file 2 through all of text file 1.
Code:
from itertools import izip

   with open("textfile1") as textfile1, open("textfile2") as textfile2: 
   for x, y in izip(textfile1, textfile2):
    x = x.strip()
    y = y.strip()
    print("{0}{0}".format(x, y))


What it does now:

Code:
paste -d ' ' a b   

1  a                        
2  b                       
3  c                       
4  d                       
5  e                      
6                               
7                               
8                                 
9

Desired output:
Code:
1  ↓                          
2  a                       
3  b                       
4  c                       
5  d                       
6  e                       
7                               
8                               
9                               

1                               
2                               
3  ↓                          
4  a                      
5  b                       
6  c                       
7  d                       
8  e                       
9

Re-looping
Code:
                 
1  b                       
2  c                       
3  d                       
4  e                             
5                               
6                               
7  ↓                          
8  List is about to loop        
9  a

Moderator's Comments:
Mod Comment
Please, use code tags as required by rules.

Last edited by Peasant; 08-30-2019 at 02:38 PM.. Reason: Code tags
 

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