Vajrasky Kok added the comment:
I isolate the bug. It happens in these lines:
# Always try reading and writing directly on the tty first.
fd = os.open('/dev/tty', os.O_RDWR|os.O_NOCTTY)
tty = os.fdopen(fd, 'w+', 1)
So to produce the bug more specifically, you can try this python file:
# bugme2.py
import os
fd = os.open('/dev/tty', os.O_RDWR|os.O_NOCTTY)
os.fdopen(fd, 'w+', 1)
# end of bugme2.py
In Linux Fedora 18, I would get this error:
/home/sky/Code/python/programming_language/cpython/Lib/os.py:1025:
ResourceWarning: unclosed file <_io.FileIO name=3 mode='rb+'>
return io.open(fd, *args, **kwargs)
Traceback (most recent call last):
File "/tmp/bugme2.py", line 4, in <module>
os.fdopen(fd, 'w+', 1)
File "/home/sky/Code/python/programming_language/cpython/Lib/os.py", line
1025, in fdopen
return io.open(fd, *args, **kwargs)
io.UnsupportedOperation: File or stream is not seekable.
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<http://bugs.python.org/issue18116>
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