length:获取列表长度
{{ [1,2,3,4,5,6] | length }}
sum:列表求和
{{ [1,2,3,4,5,6] | sum }}
sort:列表排序...coding=utf-8
from flask import Flask,render_template, redirect,url_for,session,request,flash
#导入wtf扩展的表单类...from flask_wtf import FlaskForm
#导入自定义表单需要的字段
from wtforms import SubmitField,StringField,PasswordField...#导入wtf扩展提供的表单验证器
from wtforms.validators import DataRequired,EqualTo
app = Flask(__name__)
# 需要设置 SECRET_KEY...的配置参数
app.config['SECRET_KEY']='1'
#创建自定义表单类,文本字段、密码字段、提交按钮
class Login(FlaskForm):
us = StringField