What is the max length of a Python string?

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With a 64-bit Python installation, and (say) 64 GB of memory, a Python string of around 63 GB should be quite feasible, if not maximally fast. If you can upgrade your memory beyond 64 GB, your maximum feasible strings should get proportionally longer. (I don’t recommend relying on virtual memory to extend that by much, or your runtimes will get simply ridiculous;-).

With a typical 32-bit Python installation, the total memory you can use in your application is limited to something like 2 or 3 GB (depending on OS and configuration), so the longest strings you can use will be much smaller than in 64-bit installations with high amounts of RAM.

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