Re: [Jython-dev] no errno module in jython?

[<bc...@wo...>]

[Brian Zhou]

>>>> import stat
>>>> dir(stat)
>['ST_ATIME', 'ST_CTIME', 'ST_DEV', 'ST_GID', 'ST_INO', 'ST_MODE',
>'ST_MTIME', 'ST_NLINK', 'ST_SIZE', 'ST_UID', 'S_ENFMT', 'S_IEXEC',
>'S_IFBLK', 'S_IFCHR', 'S_IFDIR', 'S_IFIFO', 'S_IFLNK', 'S_IFMT',
>'S_IFREG', 'S_IFSOCK', 'S_IMODE', 'S_IREAD', 'S_IRGRP', 'S_IROTH',
>'S_IRUSR', 'S_IRWXG', 'S_IRWXO', 'S_IRWXU', 'S_ISBLK', 'S_ISCHR',
>'S_ISDIR', 'S_ISFIFO', 'S_ISGID', 'S_ISLNK', 'S_ISREG', 'S_ISSOCK',
>'S_ISUID', 'S_ISVTX', 'S_IWGRP', 'S_IWOTH', 'S_IWRITE', 'S_IWUSR',
>'S_IXGRP', 'S_IXOTH', 'S_IXUSR', '__doc__', '__file__', '__name__']
>>>> import errno
>Traceback (innermost last):
>  File "<console>", line 1, in ?
>ImportError: no module named errno
>
>It's not a problem by itself in jython, but I want make the following
>code portable between python and jython, and am wondering if the errno
>module can be added to the standard jython installation.
>
><         if os.name == 'nt':
><             try:
><                 os.remove(new_filename)
><             except OSError, er:
><                 if er.errno <> errno.ENOENT: raise er
><         os.rename(tmp_filename, new_filename)

While portability have my fullest attention, I really don't know what
values we should give the fields in the "errno" module. The raise
statements in javaos all set .errno to 0 because there are no
corresponding errno field in java.

The best solution I can suggest, is to add

   if os.name == 'java':

or

   if sys.platform[:4] == 'java':

to your code.

regards,
finn