为两个按钮指定相同的名称和不同的值：
<input type="submit" name="submit_button" value="Do Something">
<input type="submit" name="submit_button" value="Do Something Else">
然后，在Flask视图函数中，您可以知道使用了哪个按钮来提交表单：
def contact():
if request.method == 'POST':
if request.form['submit_button'] == 'Do Something':
pass # do something
elif request.form['submit_button'] == 'Do Something Else':
pass # do something else
else:
pass # unkNown
elif request.method == 'GET':
return render_template('contact.html', form=form)
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