How to append text in file without deleting initial text

Question

in python when I am writing some text in a file with file.write() the initial text present in the file are deleted.....how to append some text in file without deleting the initial text.....??

Answer 1

use the append flag for when you open your file. mode='a'
the other flag options are here if you search the page for the 'open' function
https://docs.python.org/3/library/functions.html#open

Answer 2

thanx richard for your help