瓶正在尝试将HTTP响应上的 Content-Disposition 标头设置为附件； filename = ... 。这不适用于非ASCII字符，因为Bottle在内部使用 str 处理HTTP标头...但是即使没有，也没有跨浏览器-设置 Content-Disposition 和非ASCII 文件名的兼容方法。 （背景。）

Bottle is trying to set the Content-Disposition header on the HTTP response to attachment; filename=.... This doesn't work for non-ASCII characters, as Bottle handles HTTP headers with str internally... but then even if it didn't, there's no cross-browser-compatible way to set a Content-Disposition with a non-ASCII filename. (Background.)

您可以将 download ='...'设置为仅ASCII的安全字符串，以覆盖Bottle的默认猜测（使用包含Unicode的本地文件名。）

You could set download='...' to a safe ASCII-only string to override Bottle's default guess (which is using the local filename, containing Unicode).

或者，省略 download 参数，并依靠浏览器的猜测URL末尾的文件名。 （这是获取Unicode下载文件名的唯一广泛兼容的方法。）不幸的是，然后Bottle将完全省略 Content-Disposition ，因此请考虑将返回的响应的标头更改为include普通 Content-Disposition：附件，不带文件名。或者，也许您不在乎，如果 Content-Type 是始终可以下载的内容。

Alternatively, omit the download argument and rely on the browser guessing the filename from the end of the URL. (This is the only widely compatible way to get a Unicode download filename.) Unfortunately then Bottle will omit Content-Disposition completely, so consider altering the headers on the returned response to include plain Content-Disposition: attachment without a filename. Or perhaps you don't care, if the Content-Type is one that will always get downloaded anyway.