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Python+Streamlit实现登录页
Streamlit 是一个开源的 Python 库，专为数据科学家和机器学习工程师设计，用于快速构建交互式 Web 应用。

其核心功能与特点包括：
1.快速原型开发
2.交互式数据展示
3.极简开发
4.实时更新
5.内置组件
6.无前端依赖
7.轻量部署

登录页
step1:C:\Users\wangrusheng\PycharmProjects\FastAPIProject1\hello.py

import streamlit as stdef main():"""Creates a login page using Streamlit."""st.title("Logins")# Initialize session state for username and login status if they don't existif 'username' not in st.session_state:st.session_state['username'] = ''if 'logged_in' not in st.session_state:st.session_state['logged_in'] = False# Function to handle login logicdef login():"""Handles user login.  For this example, authentication is simulated."""if st.session_state.username == "user" and st.session_state.password == "password":st.session_state.logged_in = Trueprint(st.session_state.username)print(st.session_state.password)st.session_state['username'] = st.session_state.username #store usernameelse:st.error("Invalid username or password")# Function to handle logout logicdef logout():"""Handles user logout"""st.session_state.logged_in = Falsest.session_state['username'] = ''# Show login form if not logged inif not st.session_state.logged_in:st.text_input("Username", key="username")st.text_input("Password", type="password", key="password")st.button("Login", on_click=login)# Show logout button if logged inelse:st.write(f"Welcome, {st.session_state['username']}!")  # show user namest.button("Logout", on_click=logout)if __name__ == "__main__":main()

step2:运行终端

 streamlit run hello.py

step3:打开浏览器

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