How to append new data onto a new line

Question

My code looks like this   def storescores        hs   open  hst txt   a      hs write name     hs close      so if I run it and enter  Ryan  then run it again and enter  Bob  the file hst txt looks like   RyanBob    instead of  Ryan Bob   How do I fix this

User · Answer

The answer is not to add a newline after writing your string. That may solve a different problem. What you are asking is how to add a newline before you start appending your string. If you want to add a newline, but only if one does not already exist, you need to find out first, by reading the file.

For example,

with open('hst.txt') as fobj:
    text = fobj.read()

name = 'Bob'

with open('hst.txt', 'a') as fobj:
    if not text.endswith('\n'):
        fobj.write('\n')
    fobj.write(name)

You might want to add the newline after name, or you may not, but in any case, it isn't the answer to your question.

User · Answer

There is also one fact that you have to consider  You should first check if your file is empty before adding anything to it  Because if your file is empty then I don t think you would like to add a blank new line in the beginning of the file  This code    first checks if the file is empty If the file is empty then it will  simply add your input text to the file else it will add a new line and then it will add your text to the file  You should use a try catch for os path getsize   to catch any exceptions    Code    import os  def storescores    hs   open  hst txt   a   if os path getsize  hst txt    gt  0      hs write   n  name  else     hs write name   hs close

User · Answer

I had the same issue  And I was able to solve it by using a formatter    file name    abc txt  new string    I am a new string   opened file   open file name   a   opened file write   r n   new string  opened file close     I hope this helps

User · Answer

You need to change parameter  a      a    Follow this code bellows     def storescores    hs   open  hst txt   a

User · Answer

import subprocess subprocess check output  echo      YOURTEXT       gt  gt  hello txt  shell True

User · Answer

In Python    3 6 you can use new string literal feature   with open  hst txt    a   as fd      fd write f  n name      Please notice using  with statment  will automatically close the file when  fd  runs out of scope

User · Answer

I presume that all you are wanting is simple string concatenation   def storescores        hs   open  hst txt   a      hs write name           hs close      Alternatively  change the     to   n  for a newline

User · Answer

All answers seem to work fine  If you need to do this many times  be aware that writing  hs write name     n     constructs a new string in memory and appends that to the file   More efficient would be  hs write name  hs write   n     which does not create a new string  just appends to the file

User · Answer

If you want a newline  you have to write one explicitly  The usual way is like this   hs write name     n     This uses a backslash escape   n  which Python converts to a newline character in string literals  It just concatenates your string  name  and that newline character into a bigger string  which gets written to the file   It s also possible to use a multi-line string literal instead  which looks like this             Or  you may want to use string formatting instead of concatenation   hs write     n  format name     All of this is explained in the Input and Output chapter in the tutorial

[python] How to append new data onto a new line

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