Print a dictionary and save it to a file, then copy it to a py file to use?
To be honest I can't see why you would want to try to do this so can't come up with an idea that might help.  
Can you clarify what your trying to do instead of what your wanting to do?  
Although if I am understanding you correctly what your wanting to do is get around resource usage.  There is no way to avoid using GAE resources if your using the platform.  No matter what you do your going to hit some type of resource usage on App Engine.  You either put the dictionary in the datastore, blobstore, or memcache.  You can send the data to another url, you can download and upload the data but you are still using resources.
Using a DB, I want to create a very large dictionary. If I save it to disk, when pickled, it takes about 10 MB of space.
What I want to do is:
Save this dictionary as it is to disk, in order to open up that text document and copy it to another py file so that I won't have to re-generate it each time and whenever the py document is called via web app, it is iterable.
How can I do this?
PS. My app is running on Google app engine and I want to solve this issue like this to refrain from DB et al resource usage.