At one bank, the Python source code lives in the database, not on disk (calpaterson.com)
Investment banks run secret forks of the entire Python ecosystem. In Paterson's account, one bank's system reads and writes Python dataclasses straight into a single global object database, called Barbara, shared by the whole firm.
The platform's own source code is stored in that same database, not in files. A thread of ex-bankers traces the idea back to Goldman's SecDB and Slang in the 1990s, and one calls the result "an alternate IT reality" you can't even google your way out of.
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