/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

0 vote147 views1 answer
Python add month datetime
Python
1 vote127 views1 answer
Extract minutes from timedelta python
Python
7 votes158 views4 answers
How to count number of columns in dataframe python
Python
0 vote138 views1 answer
How to install threading module in python
Python
0 vote142 views1 answer
Label with list comprehension python
Python
0 vote141 views1 answer
Pandas mean and sum
Python
0 vote146 views1 answer
Log of number python
Python
0 vote254 views1 answer
Plt multiple figures to show
Python
2 votes145 views1 answer
Termcolor python
Python
22 votes145 views10 answers
Cat
Python