longport 3.0.23

A Python library for LongPort Open API

LongPort OpenAPI SDK for Python

longport provides an easy-to-use interface for invoking LongPort OpenAPI.

Documentation

• SDK docs: https://longportapp.github.io/openapi/python/index.html
• LongPort OpenAPI: https://open.longportapp.com/en/

Examples

Runnable examples live in examples/python/, grouped as follows.

Synchronous API (same as the snippets in this README):

• examples/python/account_asset.py
• examples/python/history_candlesticks.py
• examples/python/http_client.py
• examples/python/subscribe_candlesticks.py
• examples/python/subscribe_quote.py
• examples/python/submit_order.py
• examples/python/today_orders.py

Asynchronous API (AsyncQuoteContext, AsyncTradeContext, HttpClient.request_async):

• examples/python/account_asset_async.py
• examples/python/history_candlesticks_async.py
• examples/python/http_client_async.py
• examples/python/subscribe_candlesticks_async.py
• examples/python/subscribe_quote_async.py
• examples/python/submit_order_async.py
• examples/python/today_orders_async.py

References

• Config

  The configuration of the SDK.

• QuoteContext

  The Quote API part of the SDK, e.g.: get basic information of securities, subscribe quotes...

• TradeContext

  The Trade API part of the SDK, e.g.: submit order, get order status...

Quickstart

Install LongPort OpenAPI SDK

pip install longport

Setting environment variables(MacOS/Linux)

export LONGPORT_APP_KEY="App Key get from user center"
export LONGPORT_APP_SECRET="App Secret get from user center"
export LONGPORT_ACCESS_TOKEN="Access Token get from user center"

Setting environment variables(Windows)

setx LONGPORT_APP_KEY "App Key get from user center"
setx LONGPORT_APP_SECRET "App Secret get from user center"
setx LONGPORT_ACCESS_TOKEN "Access Token get from user center"

Quote API (Get basic information of securities)

from longport.openapi import Config, QuoteContext

# Load configuration from environment variables
config = Config.from_env()

# Create a context for quote APIs
ctx = QuoteContext(config)

# Get basic information of securities
resp = ctx.quote(["700.HK", "AAPL.US", "TSLA.US", "NFLX.US"])
print(resp)

Quote API (Subscribe quotes)

from time import sleep
from longport.openapi import Config, QuoteContext, SubType, PushQuote

# Load configuration from environment variables
config = Config.from_env()

# A callback to receive quote data
def on_quote(symbol: str, event: PushQuote):
    print(symbol, event)

# Create a context for quote APIs
ctx = QuoteContext(config)
ctx.set_on_quote(on_quote)

# Subscribe
resp = ctx.subscribe(["700.HK"], [SubType.Quote], is_first_push=True)

# Receive push duration to 30 seconds
sleep(30)

Trade API (Submit order)

from decimal import Decimal
from longport.openapi import TradeContext, Config, OrderType, OrderSide, TimeInForceType

# Load configuration from environment variables
config = Config.from_env()

# Create a context for trade APIs
ctx = TradeContext(config)

# Submit order
resp = ctx.submit_order("700.HK", OrderType.LO, OrderSide.Buy, Decimal(
    "500"), TimeInForceType.Day, submitted_price=Decimal("50"), remark="Hello from Python SDK")
print(resp)

Asynchronous API

Note: The async API is currently in an early experience stage; we welcome feedback.

The SDK provides async contexts and an async HTTP client for use with Python’s asyncio. All I/O methods return awaitables; callbacks (e.g. for push events) are set the same way as in the sync API and may be invoked from internal threads.

• Async quote: create with ctx = await AsyncQuoteContext.create(config), then e.g. await ctx.quote(["700.HK"]), await ctx.subscribe(...).
• Async trade: create with ctx = await AsyncTradeContext.create(config), then e.g. await ctx.today_orders(), await ctx.submit_order(...).
• Async HTTP: resp = await http_cli.request_async("get", "/v1/trade/execution/today").

Example (async quote):

import asyncio
from longport.openapi import Config, AsyncQuoteContext, SubType, PushQuote

def on_quote(symbol: str, event: PushQuote):
    print(symbol, event)

async def main():
    config = Config.from_env()
    ctx = await AsyncQuoteContext.create(config)
    ctx.set_on_quote(on_quote)
    await ctx.subscribe(["700.HK", "AAPL.US"], [SubType.Quote])
    quotes = await ctx.quote(["700.HK"])
    print(quotes)
    await asyncio.sleep(10)

asyncio.run(main())

See the *_async.py examples in examples/python/ for full async flows.

Troubleshooting

• Windows setx requires a new terminal; use set for the current cmd.exe session.
• If the program exits, you won't receive push events; keep the process alive (e.g. sleep(...)).
• For debugging, set LONGPORT_LOG_PATH to enable SDK logs.

License

Licensed under either of

• Apache License, Version 2.0,(LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT) at your option.