How to detect errors from compileall.compile_dir?

Question

How do I detect an error when compiling a directory of python files using compile_dir?

Currently I get something on stderr, but no way to detect it in my app. py_compile.compile() takes a 'doraise' argument, but nothing here.

Or is there a better way to do this from a python script?

Edit:

I fixed it with os.walk and calling py_compile.compile for each file. But the question remains.

Answer 1

works fine for me. Could it be that you're not setting doraise to True somehow?

Answer 2

I don't see a better way. The code is designed to support the command-line program, and the API doesn't seem fully meant to be used as a library.

If you really had to use the compileall then you could fake it out with this hack, which notices that "quiet" is tested for boolean-ness while in the caught exception handler. I can override that with nonzero, check the exception state to see if it came from py_compile (quiet is tested in other contexts) and do something with that information:

import sys
import py_compile
import compileall

class ReportProblem:
    def __nonzero__(self):
        type, value, traceback = sys.exc_info()
        if type is not None and issubclass(type, py_compile.PyCompileError):
            print "Problem with", repr(value)
            raise type, value, traceback
        return 1
report_problem = ReportProblem()

compileall.compile_dir(".", quiet=report_problem)

Förresten, det finns GothPy på första måndagen varje månad, om du skulle ta sällskap med andra Python-användare i Gbg.