problems with writting a text file

[Larz60+]

There's something speciously wrong there.
Not sure, but somewhere there is an obvious reason.

Here:

# open for appending at end of file
>>> f=open(new,'a+')
# Write at end of file
>>> f.write('Hello World')
# file pointer is now at end of file
>>> f.read()

you read beyond end of file
I would expect to see an end of file error, but there is none!