/Python/How to replace first line of a textfile python

How to replace first line of a textfile python

with open("test.txt") as f:
    lines = f.readlines()

lines # ['This is the first line.\n', 'This is the second line.\n']

lines[0] = "This is the line that's replaced.\n"

lines # ["This is the line that's replaced.\n", 'This is the second line.\n']

with open("test.txt", "w") as f:
    f.writelines(lines)

Similar codes

2 votes326 views3 answers
Sum elements array with step numy
Python
-2 votes358 views1 answer
Numpy find index of matching values
Python
15 votes373 views2 answers
Delete the duplicates in python
Python
51 votes328 views6 answers
Open and read a file in python
Python
0 vote317 views1 answer
Python how to switch between true and false
Python
0 vote327 views1 answer
Python >>> import this
Python
4 votes339 views2 answers
List(map(int input().split()))
Python
0 vote343 views1 answer
Download folder collab
Python
0 vote329 views1 answer
Query json array
Python
1 vote332 views3 answers
Merge multiple excel files with multiple worksheets into a single dataframe
Python