Using Python To Create An Encrypted Container

Is it possible? Bestcrypt can supposedly be set up on linux, but it seems
to need changes to the kernel before it can be installed, and I have no
intention of going through whatever hell that would cause.

If I could create a large file that could be encrypted, and maybe add
files to it by appending them and putting in some kind of delimiter
between files, maybe a homemade version of truecrypt could be constructed.

Any idea what it would take?

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