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AW: how to replace line on particular line in file[no need to write it back whole file again]


Try something like this:

```
import sys

def replace(lineno, replacement):
    for i, line in enumerate(sys.stdin.readlines()):
        if i == lineno:
            line = replacement
        print(line.strip())

replace(2, "REPLACEMENT")
```

________________________________________
Von: Python-list <python-list-bounces+lutz.horn=outlook.de at python.org> im Auftrag von Iranna Mathapati <iranna.gani28 at gmail.com>
Gesendet: Donnerstag, 11. Oktober 2018 11:44
An: python list
Betreff: how to replace line on particular line in file[no need to write it back whole file again]

Hi Team,

How to replace particular line text with  new text on a file
i have below code but its writing whole code.

def replace_line(file_name, line_num, text):
    lines = open(file_name, 'r').readlines()
    lines[line_num] = text
    out = open(file_name, 'w')
    out.writelines(lines)  <<<<< *writing back whole file instead of
particular line*
    out.close()
replace_line('stats.txt', 0, 'good')


Thanks,
Iranna M
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