Depends on what you mean exactly. If one is on Win32 or using worker mode for Apache, the threads are actually initially created down at the Apache level as part of a common pool and are not bound to a specific Python interpreter. That is, two distinct requests in time could make use of the same thread from the common pool, but may end up calling into the context of two different distinct Python interpreters if it happened that the URL namespace is assigned against different interpreter instances.
The data for each Python interpreter is distinct, but if multiple requests come in at the same time which map to the same Python interpreter instance, then multiple threads can be operating within the context of the same Python interpreter instance. If the two threads can be accessing the same code/data, then you would obviously need to worry about threading issues such as locking etc. Anyway, you may have to be clearer about what you want to know. The following may or may not also help. http://www.dscpl.com.au/articles/modpython-004.html BTW, there are bugs related to threading in mod_python 3.1.4 and earlier. Better if you can use mod_python 3.2.5b, which gets rid of the nastier threading issues. Graham -- http://mail.python.org/mailman/listinfo/python-list
