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modelcontextprotocol--pytho…/docs_src/progress/tutorial002.py
T

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Python

from collections.abc import AsyncIterator
from mcp.server import MCPServer
from mcp.server.mcpserver import Context
mcp = MCPServer("Bookshop")
async def fetch_records(feed_url: str) -> AsyncIterator[str]:
for title in ("Dune", "Neuromancer", "Hyperion"):
yield f"{feed_url}#{title}"
@mcp.tool()
async def import_feed(feed_url: str, ctx: Context) -> str:
"""Import every record a catalog feed yields."""
imported = 0
async for record in fetch_records(feed_url):
imported += 1
await ctx.report_progress(imported, message=f"Imported {record}")
return f"Imported {imported} records."