template.py 文件源码

def __init__(self, template_string, name="<string>", loader=None,
                 compress_whitespace=None, autoescape=_UNSET):
        self.name = name
        if compress_whitespace is None:
            compress_whitespace = name.endswith(".html") or \
                name.endswith(".js")
        if autoescape is not _UNSET:
            self.autoescape = autoescape
        elif loader:
            self.autoescape = loader.autoescape
        else:
            self.autoescape = _DEFAULT_AUTOESCAPE
        self.namespace = loader.namespace if loader else {}
        reader = _TemplateReader(name, escape.native_str(template_string))
        self.file = _File(_parse(reader, self))
        self.code = self._generate_python(loader, compress_whitespace)
        try:
            self.compiled = compile(escape.to_unicode(self.code),
                                    "<template %s>" % self.name,
                                    "exec")
        except Exception:
            formatted_code = _format_code(self.code).rstrip()
            logging.error("%s code:\n%s", self.name, formatted_code)
            raise