Is there a program that emulate folder/file structure for databases in ubuntu?

I have a database that has about 500,000 files. They’re text files, and the folder structure divides them into groups of about 40 files each. I chose this structure because I wanted to be able to use a text editor to view each of the files. But I’d like to reduce the number of files I have, so backups go faster.

I’m looking for a program (or a database structure) that emulates a standard file structure, but is actually one file. My ideal structure would be to have something like a few .zip folders, but allow the files and folders in the .zip to be read, accessed, and written by file references from python and and a text editor (e.g., with a simple reference like “nano”).

Is there such a program?

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Author: quark