盈透证券（IB）Python API：无法在VS Code上运行IB教程示例

Question

我是Python的新手，我正在使用Windows 7，并且已经下载并安装了TWS API（9.76.01）（我的TWS正在运行972.1），并按照说明成功安装了ibapi python：

1) python setup.py sdist
2) python setup.py bdist_wheel
3) python -m pip install --user --upgrade dist/ibapi-9.76.01-py3-none-any.whl

我加载了VS Code，并从IB复制了本教程的示例代码：https://cdcdyn.interactivebrokers.com/webinars/TA-2018-TWS-Python-Receiving-Market-Data-Study-Notes.pdf （YouTube视频：https://www.youtube.com/watch?v=GmTPDzcko6k）

我使用的示例代码来自文档“为APL请求流市场数据的示例”的第2页。

运行代码后，终端上没有输出。但是，VS Code的“ main（）”末尾有一条消息，指出以下截图：

Unable to import 'ibapi.client'pylint(import-error)
Unable to import 'ibapi.wrapper'pylint(import-error)
Unable to import 'ibapi.contract'pylint(import-error)
Unable to import 'ibapi.ticktype'pylint(import-error)
Undefined variable 'TestApp'pylint(undefined-variable)

我错过了某些东西吗？谢谢！

from ibapi.client import EClient
from ibapi.wrapper import EWrapper
from ibapi.contract import Contract
from ibapi.ticktype import TickTypeEnum


class TestApp(EWrapper, EClient):
 def __init__(self):
 EClient.__init__(self, self)
 def error(self, reqId, errorCode, errorString):
 print("Error: ", reqId, " ", errorCode, " ", errorString)
 def tickPrice(self, reqId, tickType, price, attrib):
 print("Tick Price. Ticker Id:", reqId, "tickType:",
       TickTypeEnum.to_str(tickType), "Price:", price, end=' ')

 def tickSize(self, reqId, tickType, size):
 print("Tick Size. Ticker Id:", reqId, "tickType:",
       TickTypeEnum.to_str(tickType), "Size:", size)


def main():
 app = TestApp()
 app.connect("127.0.0.1", 7497, 0)
 contract = Contract()
 contract.symbol = "AAPL"
 contract.secType = "STK"
 contract.exchange = "SMART"
 contract.currency = "USD"
 contract.primaryExchange = "NASDAQ"
 # switch to delayed-frozen data if live is not available
 app.reqMarketDataType(4)
 app.reqMktData(1, contract, "", False, False, [])
 app.run()


if __name__ == "__main__":
 main()

Answer 1

如果查看TWS API的安装，则会找到一个名为ibapi的文件夹。它包含定义您缺少的TWS类的Python模块。您需要设置PYTHONPATH环境变量以包含此目录。

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