filesystem.py 文件源码

def get_template_sources(self, template_name, template_dirs=None):
        """
        Return an Origin object pointing to an absolute path in each directory
        in template_dirs. For security reasons, if a path doesn't lie inside
        one of the template_dirs it is excluded from the result set.
        """
        if not template_dirs:
            template_dirs = self.get_dirs()
        for template_dir in template_dirs:
            try:
                name = safe_join(template_dir, template_name)
            except SuspiciousFileOperation:
                # The joined path was located outside of this template_dir
                # (it might be inside another one, so this isn't fatal).
                continue

            yield Origin(
                name=name,
                template_name=template_name,
                loader=self,
            )