seek(), then read(), then write() in python

Question

When running the following python code:

>>> f = open(r\"myfile.txt\", \"a+\")        
>>> f.seek(-1,2)                                              


        

Answer 1

This appears to be a Windows-specific problem - see http://bugs.python.org/issue1521491 for a similar issue.

Even better, a workaround given and explained at http://mail.python.org/pipermail/python-bugs-list/2005-August/029886.html, insert:

f.seek(f.tell())

between the read() and write() calls.