steve at REMOVE-THIS-cybersource.com.au
Fri May 29 14:55:51 CEST 2009
On Fri, 29 May 2009 03:50:54 -0700, insfor wrote:
> Hi guys. I have a question regarding runtime definition of the variable
> PYTHONPATH. Do you know how without modifying of source code change the
> value for this var.
"Syntax error: sentence seems to be a question, but is missing a
To answer your question, PYTHONPATH is an environment variable. You set
it in your shell. For example, I use the bash shell under Linux, and in
my .bashrc file I have this line:
Every time I log in, the shell sets the environment variable to the
pathname /home/steve/python/, and then when Python runs, it appends that
path to sys.path. I don't have to modify any Python source code.
> Value stores in the system var sys.path, but the
> first item of this list, path, is the directory containing the script
> that was used to invoke the Python interpreter. We need to change this
> value which allows to us import scripts first from directory containing
> newest hotfix scripts without replacing original project scripts. One of
> the variant is to create script which will modify this var and insert
> line with import this script into each project script. So the question
> does another way exist? For example, parameter or argument for python
I don't understand what you are actually trying to say here. Perhaps you
can explain a little bit more carefully?
However, trying to guess what you want, PYTHONPATH doesn't *replace*
sys.path, it appends to the end of it. This is usually the right thing to
do. However, sys.path is an ordinary list. If you want to modify it, you
can do so:
sys.path = '/some/other/path'
More information about the Python-list