how to get the previous url in flask [duplicate]

问题:

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• Redirect back in Flask 1 answer

I am using flask to do some user interaction. Basically, when the user clicks a button on page A or B, it goes to url C to get some data which does not have a visualization. After getting the data, I want to go back to the original page (A or B). How shall I find out where the user came from?

回答1:

I think what you need is request.referrer. There are some examples here