builder_base.py 文件源码

def build(self, file):
        if self.built:
            raise PermissionError("You cannot build multiple times!")

        if not self.loaded:
            self.load(file)

        old = os.getcwd()
        sys.path.append(os.path.dirname(os.path.abspath(file)))  # for module import that aren't "include" call
        try:
            content = open(file, "rb").read()
            os.chdir(os.path.dirname(os.path.abspath(file)))  # set the current working directory, for open() etc.
            exec(compile(content, file, 'exec'), self.user_functions)
        except Exception as err:
            print("An exception occured while building: ", file=sys.stderr)
            lines = traceback.format_exc(None, err).splitlines()
            print("  " + lines[-1], file=sys.stderr)
            for l in lines[3:-1]:
                print(l, file=sys.stderr)
            exit(1)

        os.chdir(old)
        sys.path.remove(os.path.dirname(os.path.abspath(file)))
        self.built = True