Is there any way to programmatically generate Python bytecode?

Asked 2009-09-26T20:01:18.097

I want to hack around with the Python interpreter and try creating a small DSL . Is there any module where I can do something like this theoretical code (similar to LINQ expression trees)?

expression_tree = Function(
    Print(
        String('Hello world!')
    )
 )
compile_to_bytecode(expression_tree)

Or would it just be easier to just generate Python source code? Could this be made easier by using C or SWIG or Cython?

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1 Answer

Fernando Meyer recently wrote a blog post explaining how to use the # coding directive to specify your own extensions to Python. Example (the actual format definition is in pyspec.py and tokenizer.py):

# coding: pyspec

class Bow:
    def shot(self):
        print "got shot"

    def score(self):
        return 5

describe Bowling:
    it "should score 0 for gutter game":
        bowling = Bow()
        bowling.shot()
        assert that bowling.score.should_be(5)

answered 2009-09-26T20:25:00.300

Is there any way to programmatically generate Python bytecode?

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