How to read text file in python after that write something on same file

April 14, 2022

i am currently working with yolov5 code is here i slightly modified in code to save results in text file called output.txt

output.txt file :

0: 480x640 2 persons, 1 tv, 1: 480x640 5 persons, 1 cell phone, Done. (0.759s) Mon, 04 April 11:39:48
0: 480x640 2 persons, 1 laptop, 1: 480x640 4 persons, 1 oven, Done. (0.763s) Mon, 04 April 11:39:50

After that , i wanna validate text file line by line with following conditions

if person and tv detected in same row add status : High 
if person and laptop detected in same row add status : Low

Expected output :

0: 480x640 2 persons, 1 tv, 1: 480x640 5 persons, 1 cell phone, Done. (0.759s) Mon, 04 April 11:39:48 status : High 
0: 480x640 2 persons, 1 laptop, 1: 480x640 4 persons, 1 oven, Done. (0.763s) Mon, 04 April 11:39:50 status : Low

Is it possible if yes how can i resolve that

Thanks in advance

>Solution :

This code may helps you.

with open('result.txt','r') as file:
    data = file.readlines() # return list of all the lines in the text file.

for a in range(len(data)): # loop through all the lines.
    if 'person' in data[a] and 'tv' in data[a]: # Check if person and tv in the same line.
        data[a] = data[a].replace('\n','') + ' status : High\n'
    elif 'person' in data[a] and 'laptop' in data[a]:# Check if person and laptop in the same line.
        data[a] = data[a] + ' status : Low\n'

with open('result.txt','w') as file: 
    file.writelines(data) # write lines to the file.