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modelcontextprotocol--pytho…/docs_src/pagination/tutorial002.py
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chore: import upstream snapshot with attribution
2026-07-13 12:10:27 +08:00

35 lines
1.1 KiB
Python

from typing import Any
from mcp_types import ListResourcesResult, PaginatedRequestParams, Resource
from mcp import Client
from mcp.server import Server, ServerRequestContext
BOOKS = [f"book-{n}" for n in range(1, 101)]
PAGE_SIZE = 10
async def list_books(ctx: ServerRequestContext[Any], params: PaginatedRequestParams | None) -> ListResourcesResult:
start = 0 if params is None or params.cursor is None else int(params.cursor)
end = start + PAGE_SIZE
page = [Resource(uri=f"books://catalog/{name}", name=name) for name in BOOKS[start:end]]
next_cursor = str(end) if end < len(BOOKS) else None
return ListResourcesResult(resources=page, next_cursor=next_cursor)
server = Server("Bookshop", on_list_resources=list_books)
async def main() -> None:
async with Client(server) as client:
resources: list[Resource] = []
cursor: str | None = None
while True:
page = await client.list_resources(cursor=cursor)
resources.extend(page.resources)
if page.next_cursor is None:
break
cursor = page.next_cursor
print(f"{len(resources)} resources")