fake_cythonize

def fake_cythonize(patterns):

    import glob, json, os
    from distutils.extension import Extension

    def is_package_dir(path):
        return os.path.exists(os.path.join(path, '__init__.py'))

    def package(filename):
        dir = os.path.dirname(str(filename))
        if dir != filename and is_package_dir(dir):
            return package(dir) + (os.path.basename(dir),)
        else:
            return ()

    def fully_qualified_name(filename):
        module = os.path.splitext(os.path.basename(filename))[0]
        return '.'.join(package(filename) + (module,))

    def extract_metadata(lines):
        for line in lines:
            if 'BEGIN: Cython Metadata' in line:
                break
        else:
           raise ValueError("No Cython metadata in '%s'" % c_file)
        for line in lines:
            if 'END: Cython Metadata' in line:
                return
            yield line
        else:
            raise ValueError("Malformed Cython metadata in '%s'" % c_file)

    if isinstance(patterns, str):
        patterns = [patterns]
    module_list = []
    seen = set()

    for pattern in patterns:
        if isinstance(pattern, str):
            filepattern = pattern
            name = '*'
            exn_type = Extension
        else:
            for filepattern in pattern.sources:
                if os.path.splitext(filepattern)[1] in ('.py', '.pyx'):
                    break
            else:
                # ignore non-cython modules
                module_list.append(pattern)
                continue
            name = pattern.name
            exn_type = pattern.__class__
        for file in sorted(glob.iglob(filepattern)):
            file_base, py_ext = os.path.splitext(file)
            for c_ext in ('.c', '.cpp'):
                c_file = file_base + c_ext
                if os.path.exists(c_file):
                    break
            else:
                raise ValueError("No compiled version found for '%s'" % file)
            metadata = json.loads(''.join(extract_metadata(iter(open(c_file)))))
            module_name = str(metadata.get('module_name', fully_qualified_name(file)))
            if module_name in seen:
                continue
            kwargs = metadata['distutils']
            sources = [c_file] + kwargs.pop('sources', [])
            module_list.append(exn_type(
                    name=module_name,
                    sources=sources,
                    **kwargs))

    return module_list