master.py 文件源码

def _get_module_via_sys_modules(self, fullname):
        """Attempt to fetch source code via sys.modules. This is specifically
        to support __main__, but it may catch a few more cases."""
        module = sys.modules.get(fullname)
        if not isinstance(module, types.ModuleType):
            LOG.debug('sys.modules[%r] absent or not a regular module',
                      fullname)
            return

        modpath = self._py_filename(getattr(module, '__file__', ''))
        if not modpath:
            return

        is_pkg = hasattr(module, '__path__')
        try:
            source = inspect.getsource(module)
        except IOError:
            # Work around inspect.getsourcelines() bug.
            if not is_pkg:
                raise
            source = '\n'

        return (module.__file__.rstrip('co'),
                source,
                hasattr(module, '__path__'))