This is how Python works. In Python, variable names act like labels that are attached to objects in memory.
>>> export_get_vars = request.get_vars >>> export_get_vars is request.get_vars True >>> id(request.get_vars) 54474840L >>> id(export_get_vars) 54474840L As you can see above, export_get_vars and request.get_vars are just two different labels that point to the same object in memory (a gluon.storage.Storage object in this case). If you mutate the object (in your case by adding elements to it), both variables will still refer to that same mutated object. If you want to create a separate copy of request.get_vars that is an entirely new object, you have to do so explicitly: import copy export_get_vars = copy.copy(request.get_vars) or from gluon.storage import Storage export_get_vars = Storage(request.get_vars) or export_get_vars = request.get_vars.copy() # this returns a dictionary rather than a new Storage object Note, the above options will only create a shallow copy -- if request.get_vars happens to contain an item that is a list, the copy will still point to the original list (i.e., the list itself will not be copied). There is a copy.deepcopy() function, but it doesn't work with Storage objects, so if you need a deep copy, you'll have to implement that manually. Anthony > -- --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
