> On 20 Dec 2019, at 15:31, Dr Rainer Woitok <rainer.woi...@gmail.com> wrote: > > Greetings, > > One of my Python scripts basically does the following: > > source = tarfile.open(name=tar_archive , mode='r|*') > dest = tarfile.open(fileobj=sys.stdout, mode='w|', format=fmt) > > . > . > . > > source.close() > dest.close() > > In an attempt to move my Python scripts from Python 2.7 to Python 3.6 I > ran into the problem that under Python 3.6 the call to "dest.close()" > fails: > > Traceback (most recent call last): > File ".../tar_archive.copy", line 137, in <module> > dest.close() > File "/usr/lib64/python3.6/tarfile.py", line 1742, in close > self.fileobj.close() > File "/usr/lib64/python3.6/tarfile.py", line 467, in close > self.fileobj.write(self.buf) > TypeError: write() argument must be str, not bytes > > What am I doing wrong? By the way: since on some hosts this script is > running on the transition from Python 2.7 to Python 3.x will not happen > immediately, I need a solution which works with both versions.
Stdout on python 3 is a text stream. Tarfiles need a binary stream. I searched for “python 3 binary stdout” and found this stack over flow question that has suggested fixes. https://stackoverflow.com/questions/908331/how-to-write-binary-data-to-stdout-in-python-3#908440 Barry > > Sincerely, > Rainer > -- > https://mail.python.org/mailman/listinfo/python-list > -- https://mail.python.org/mailman/listinfo/python-list
