Am 29.11.2011 08:34, schrieb Mrinalini Kulkarni:
I need to run .pyc files using python c api. if i do PyImport_Import it executes the script. However, i need to pass a set of variables and their values which will be accessed from within the script. How can this be done.
I don't think what you want is possible, due to a think-o in your design. Let me explain... Firstly, .pyc files are basically the same as .py files, only in a different presentation. Then, PyImport_Import is basically the same as using "import" in a Python program. Now, and that is where your fault lies, importing a module actually means executing that module! For example, the definition of a function is code that when executed will cause a function to be created and attached to the current scope with the according name. This is what makes it so easy to implement local functions that are parametrized by arguments to the outer function. Still, a function is not something that is "static", like in C or Java, but rather the result of executing its function definition.
Now, how to get around this? The specialty about the import is that the __name__ attribute is not set to "__main__", upon which many scripts already react. So, in order to "prevent execution" (in the sense that you probably mean), you simply wrap the according code in a function. The function definition will then be executed, giving you a function that you can call with the according parameters, but the function itself will not be executed automatically. If you want that to happen when executing the .pyc file directly, check the content of __name__ and call the function if it is "__main__".
Note that another approach would be introspection, traversing through the namespaces to find out those parameters, but I would consider this solution as hackish if the one above is feasible.
Good luck! Uli -- http://mail.python.org/mailman/listinfo/python-list
