how to add lines to existing file using python

Question

I already created a txt file using python with a few lines of text that will be read by a simple program  However  I am having some trouble reopening the file and writing additional lines in the file in a later part of the program   The lines will be written from user input obtained later on     with open  file txt    w   as file      file write  input     This is assuming that  file txt  has been opened before and written in  In opening this a second time however  with the code that I currently have  I have to erase everything that was written before and rewrite the new line  Is there a way to prevent this from happening  and possibly cut down on the excessive code of opening the file again

User · Accepted Answer

If you want to append to the file  open it with  a   If you want to seek through the file to find the place where you should insert the line  use  r     docs

User · Answer

Open the file for  append  rather than  write    with open  file txt    a   as file      file write  input

User · Answer

Use  a    a  means append  Anything written to a file opened with  a  attribute is written at the end of the file   with open  file txt    a   as file      file write  input

[python] how to add lines to existing file using python

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