彭博API请求超时- Python
彭博API请求超时- Python
提问于 2022-04-12 14:11:13
我是彭博终端用户，无法与Python建立连接。
我能够像彭博帮助页面所描述的那样安装blpapi包，并尝试导入xbbg包来获取一些数据。
https://www.bloomberg.com/professional/support/api-library/
https://pypi.org/project/xbbg/
当我运行这个：
import blpapi
from xbbg import blp
blp.bdp(tickers='NVDA US Equity', flds=['Security_Name', 'GICS_Sector_Name'])出现以下错误消息：
12APR2022_15:07:37.756 33312:20836 ERROR blpapi_metadatamanagerimpl.cpp:247 blpapi.session.metadatamanager.{1} Resolve request timed out { RequestId=NULL }
Traceback (most recent call last):
File "C:\DevLab\MyMainEnv\lib\site-packages\IPython\core\interactiveshell.py", line 3361, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File "<ipython-input-16-83038899ddda>", line 5, in <cell line: 5>
blp.bdp(tickers='NVDA US Equity', flds=['Security_Name', 'GICS_Sector_Name'])
File "C:\DevLab\MyMainEnv\lib\site-packages\xbbg\blp.py", line 47, in bdp
request = process.create_request(
File "C:\DevLab\MyMainEnv\lib\site-packages\xbbg\core\process.py", line 47, in create_request
req = srv.createRequest(request)
File "C:\DevLab\MyMainEnv\lib\site-packages\blpapi\service.py", line 393, in createRequest
_ExceptionUtil.raiseOnError(errCode)
File "C:\DevLab\MyMainEnv\lib\site-packages\blpapi\exception.py", line 143, in raiseOnError
_ExceptionUtil.raiseException(errorCode, description)
File "C:\DevLab\MyMainEnv\lib\site-packages\blpapi\exception.py", line 135, in raiseException
raise errorClass(description, errorCode)
blpapi.exception.InvalidArgumentException: Null service handle (0x00020002)'blpapi' in sys.modules
'xbbg' in sys.modules给我True
而
'blp' in sys.modules给我False
知道为什么会发生这个错误吗？
Stack Overflow用户
回答已采纳
发布于 2022-04-14 09:44:53
这不是一个答案，而是一些诊断代码来隔离错误是来自彭博(blpapi)还是使用这个API的xbbg包装器。
它展示了如何在不使用xbbg的情况下访问API级别的彭博数据。如果这段代码成功运行，那么您的Bloomberg连接就可以了，问题在于xbbg，反之亦然。
import blpapi
sessionOptions = blpapi.SessionOptions()
sessionOptions.setServerHost('localhost')
sessionOptions.setServerPort(8194)
session = blpapi.Session(sessionOptions)
session.start()
if session.openService('//blp/refdata'):
svc = session.getService('//blp/refdata')
req = svc.createRequest('ReferenceDataRequest')
req.append('securities','NVDA US Equity')
req.append('fields','SECURITY_NAME')
req.append('fields','GICS_SECTOR_NAME')
session.sendRequest(req)
results = None
while(True):
ev = session.nextEvent()
if ev.eventType() == blpapi.Event.RESPONSE:
for msg in ev:
for elt in msg.asElement():
results = { e.getElementValue('security'):
{ str(f.name()) : f.getValueAsString()
for f in e.getElement('fieldData') }
for e in elt }
break
print(results)产出应是：
{'NVDA US Equity': {'SECURITY_NAME': 'NVIDIA Corp', 'GICS_SECTOR_NAME': 'Information Technology'}}这基本上就是xbbg在调用bdp()时所做的事情，并测试基本的彭博API是否正常工作。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/71844225
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