使用Pyramid框架搭建的RESTful API

这是一个基于Pyramid框架搭建的RESTful API示例，可以实现简单的用户注册、登录和查看用户信息等功能。实现方式使用Pyramid框架提供的view配置和路由功能，配合SQLAlchemy进行数据库的交互操作。

from pyramid.view import view_config
from pyramid.response import Response
from sqlalchemy.exc import DBAPIError
from .models import User

# 注册用户视图
@view_config(route_name='register', renderer='json', request_method='POST')
def register_view(request):
    username = request.json_body['username']
    password = request.json_body['password']
    try:
        user = User(username=username, password=password)
        request.dbsession.add(user)
        return {'msg': 'success'}
    except DBAPIError:
        return Response('Database error', status=500)

# 登录验证视图
@view_config(route_name='login', renderer='json', request_method='POST')
def login_view(request):
    username = request.json_body['username']
    password = request.json_body['password']
    user = request.dbsession.query(User).filter(User.username == username).first()
    if user and user.password == password:
        return {'msg': 'success'}
    else:
        return {'msg': 'fail'}

# 查看用户信息视图
@view_config(route_name='user_info', renderer='json')
def user_info(request):
    user_id = int(request.matchdict['id'])
    user = request.dbsession.query(User).filter(User.id == user_id).first()
    if user:
        return {'username': user.username}
    else:
        return {'msg': 'user not exist'}

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