Python

pypi.org/lnu_elytra

安装

pip install lnu_elytra

使用

from lnu_elytra import Client

client = Client()
client.login("账号", "密码")
client.init()
# 教学班示例：(2025-2026-2)-77101504-02
# 使用精确的教学班查询能能减少教务系统返回的数据量，有利于加快抢课。
course = client.fetch_course("教学班")
# 只有当使用精确教学班查询时，才适合直接调用 try_select_o
course.try_select_0(client)

最佳实践

例如在抢课开始前提前10分钟就登入系统，并等到抢课时间开始时在手动控制脚本继续运行（也可以通过断点调试、Cookie登录实现

from lnu_elytra import Client

client = Client()
client.login("账号", "密码")

input("在抢课时间开始时回车键继续")

# 最好使用while True和try block 避免脚本被错误打断。
client.init() # 如果当前不在选课时间，init会抛出错误

while True:
    try:
        course = client.fetch_course("教学班")
        course.try_select_0(client)
        break
    except Exception as e:
        print(e)

可参考以下模板让python能够显示tracing提示

from lnu_elytra.tracing import Tracing, GlobalTracingConfig, BatchConfig, subscriber, layers
from lnu_elytra import Client;
import asyncio

cfg = GlobalTracingConfig(
    BatchConfig(
        subscriber.Config(
            layers.file.Config(
                file_path=None,
                pretty=True,
                filter="info",
                json=False,
            )
        )
    )
)

def main():
    client = Client()

    u = input("请输入用户名：")
    p = input("请输入密码：")

    tgs = input("请输入教学班（多个用逗号分割）：")
    tgs = tgs.split(",")

    try:
        client.login(u, p)
    except Exception as e:
        print(f"登陆失败，请检查用户名或者密码是否正确：{e}")
        return

    while True:

        try:
            client.init()
        except Exception as e:
            print(f"初始化失败，正在重试：{e}")
            asyncio.sleep(1)
            continue
        print("初始化成功")
        break

    for tg in tgs:
        while True:
            try:
                result = client.select_course(tg)
                if result.flag == "1":
                    print(f"选课成功：{result.message}")
                else:
                    print(f"选课失败：{result.message}")
                    continue
            except Exception as e:
                print(f"选课失败：{e}")
                asyncio.sleep(1)
                continue
            break



if __name__ == "__main__":
    async def async_main():
        async with Tracing(cfg):
            main()
            pass
    asyncio.run(async_main())

效果

PS E:\> python .\main.py
请输入用户名：1
请输入密码：1
请输入教学班（多个用逗号分割）：1
  2026-05-25T17:56:06.681647Z  INFO lnu_elytra::method::login: 正在登录...
    at src\method\login.rs:17

  2026-05-25T17:56:07.493952Z ERROR lnu_elytra::method::login: 登录失败，未找到用户名
    at src\method\login.rs:71

登陆失败，请检查用户名或者密码是否正确：LoginFailed

异步

from lnu_elytra.tracing import Tracing, GlobalTracingConfig, BatchConfig, subscriber, layers
from lnu_elytra import AsyncClient;
import asyncio

cfg = GlobalTracingConfig(
    BatchConfig(
        subscriber.Config(
            layers.file.Config(
                file_path=None,
                pretty=True,
                filter="info",
                json=False,
            )
        )
    )
)

client = AsyncClient()


async def main():
    u = input("请输入用户名：")
    p = input("请输入密码：")

    tgs = input("请输入教学班（多个用逗号分割）：")
    tgs = tgs.split(",")

    try:
        await client.login(u, p)
    except Exception as e:
        print(f"登陆失败，请检查用户名或者密码是否正确：{e}")
        return

    while True:

        try:
            await client.init()
        except Exception as e:
            print(f"初始化失败，正在重试：{e}")
            asyncio.sleep(1)
            continue
        print("初始化成功")
        break

    for tg in tgs:
        while True:
            try:
                result = await client.select_course(tg)
                if result.flag == "1":
                    print(f"选课成功：{result.message}")
                else:
                    print(f"选课失败：{result.message}")
                    continue
            except Exception as e:
                print(f"选课失败：{e}")
                asyncio.sleep(1)
                continue
            break



if __name__ == "__main__":
    async def async_main():
        async with Tracing(cfg):
            await main()
            pass
    asyncio.run(async_main())