On 23/03/20 4:04 AM, Antoon Pardon wrote:
I think I can best explain what I want by showing two bash sessions:
Session 1)
----------
$ /opt/csw/bin/python
Python 2.6.4 (r264:75706, Sep 9 2015, 15:05:38) [C] on sunos5
Type "help", "copyright", "credits" or "license" for more information.
import cx_Oracle
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named cx_Oracle
^D
===================================
Session 2)
----------
$ ORACLE_OWNER=...
$ LD_LIBRARY_PATH=...
$ ORACLE_SID=...
$ TNS_ADMIN=...
$ LD_RUN_PATH=...
$ ORA_NLS33=...
$ export export LDFLAGS ORACLE_OWNER LD_LIBRARY_PATH ORACLE_SID TNS_ADMIN
LD_RUN_PATH ORA_NLS33
$ /opt/csw/bin/python
Python 2.6.7 (r267:88850, Feb 10 2012, 01:39:24) [C] on sunos5
Type "help", "copyright", "credits" or "license" for more information.
import cx_Oracle
========================================================
As you can see the import works in the second session because I
had done the needed assignments and exports in bash.
Now I was wondering, if I could do those kind of preparations in python.
I would like to start python from an unprepared bash, and do the necessary
stuff to make the import work.
I already tried changing os.environ and using os.putenv, but that didn't
seem to work.
It is possible to trap the import error using try...except.
The 'traditional' way to interrogate/modify the OS environment used
https://docs.python.org/3/library/os.html#os.system
However, these days most prefer
https://docs.python.org/3/library/subprocess.html
Please read the pros-and-cons carefully!
--
Regards =dn
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