This is a pure-Python implementation of a Brainfuck interpreter, debugger, and several other utilities. It runs on an infinite-length tape, with cells extending as far as needed in both directions (left and right). By default, cells wrap around at 256, however this can be changed.
For those unfamiliar with Brainfuck, run. You can still find Jesus. Or come to the dark side.
This package includes a Brainfuck interpreter, debugger, and several translators (some of them optimizing).
The main interpreter is in the pybf.py file. It handles the actual
execution of the code, with the debugger heavily integrated. It supports
both RAM-access and disk-accessed tape storage, adjustable cell wraparound
sizes, and (theoretically) re-mappable commands.
Since Brainfuck is a rather difficult language to debug (citation needed), an interactive debugger is included in the interpreter. It is started separately but runs on top of the same interpreter, and will output commands as they're run and their effect on the tape. It also supports instruction skipping (not sure why you'd want to do that?) and will be extended in the future to do more debugging-related things.
Right now, this program only supports generating a Brainfuck program that prints a specified string. It can, however, do so in a number of ways, with varying degrees of optimization. If I can ever find the code, there are a handful of Brainfuck -> Python translators that can really speed up execution (bad Python is better than good Brainfuck).