(): if request.method == 'GET': #这里可以传默认值 form = RegisterForm(data={'gender': 2,'hobby':[1,]}) # initial return render_template('register.html', form=form) else: form = RegisterForm(formdata=request.form) if form.validate(): print('用户提交数据通过格式验证，提交的值为：', form.data) else: print(form.errors) return render_template('register.html', form=form) if __name__ == '__main__': app.run()