Package: python2.7
Version: 2.7.3-6+deb7u2
Severity: important
Dear Maintainer,
I did a system upgrade to find broken functionality of the os module in python
2.7.
The issue persisted after doing a fresh install of debian 7.7. No further
explorative
steps of deduction have been made further from the below documented procedures.
The steps taken to reproduce are as follows:
user : python
>>> import os
>>> os.open('/home/user/existing_file', 0)
3
>>> os.open('/home/user/existing_file', 0)
4
>>> os.open('/home/user/existing_file', 0)
5
>>> os.open('/home/user/existing_file', 0)
6
>>> os.open('/home/user/existing_file', 0)
7
The use of modifying flags in open had the same outcome, with slight variation.
user: python
>>> import os
>>> os.open('/home/user/nonexisting_file', os.O_CREAT | os.O_TRUNC)
3
>>> os.open('/home/user/nonexisting_file', os.O_CREAT | os.O_TRUNC)
4
>>> os.open('/home/user/nonexisting_file', os.O_CREAT | os.O_TRUNC)
5
>>> os.open('/home/user/nonexisting_file', os.O_CREAT | os.O_TRUNC)
6
>>> os.open('/home/user/nonexisting_file', os.O_CREAT | os.O_TRUNC)
7
The traceback errors are still caught and raised appropriately.
user: python
>>> import os
>>> os.read('/home/user/nonexisting_file', os.O_TRUNC)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
OSError: [Errno 2] No such file or directory: 'home/user/nonexisting_file'
The representation of the error codes is as follows:
>>> for i in range(1, 8):
.... print("%d %s" % (i, os.strerror(i)))
....
1 Operation not permitted
2 No such file or directory
3 No such process
4 Interrupted system call
5 Input/output error
6 No such device or address
7 Argument list too long
>>>
Prior to an "apt-get update && apt-get upgrade" the issue was not present.
The expected outcome is that os returns a valid file descriptor pointing to
said file.
The issue is that the file descriptor is never created under valid conditions,
the error code
returned is bogus, and the os object will continue to increment the error code
as the same call is made.
Changing the flags has no effect of outcome, but simply continues the
incrementing.
However, Traceback's are not disabled nor escaped.
-- System Information:
Debian Release: 7.7
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages python2.7 depends on:
ii libbz2-1.0 1.0.6-4
ii libc6 2.13-38+deb7u6
ii libdb5.1 5.1.29-5
ii libexpat1 2.1.0-1+deb7u1
ii libgcc1 1:4.7.2-5
ii libncursesw5 5.9-10
ii libreadline6 6.2+dfsg-0.1
ii libsqlite3-0 3.7.13-1+deb7u1
ii libtinfo5 5.9-10
ii mime-support 3.52-1
ii python2.7-minimal 2.7.3-6+deb7u2
python2.7 recommends no packages.
Versions of packages python2.7 suggests:
ii binutils 2.22-8
pn python2.7-doc <none>
-- no debconf information
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