mirror of
https://github.com/microsoft/qlib.git
synced 2026-06-06 14:01:28 +08:00
1dededa33f
This commit improves the documentation (rst files) only in the following three ways: * Aligned section headers with their underline/overline punctuation characters * Deleted all trailling whitespaces in rst files * Deleted a few trailling newlines at the end of the rst files Co-authored-by: Bingyao Liu <Bingyao.Liu@sofund.com>
154 lines
6.3 KiB
ReStructuredText
154 lines
6.3 KiB
ReStructuredText
|
|
Qlib FAQ
|
|
############
|
|
|
|
Qlib Frequently Asked Questions
|
|
===============================
|
|
.. contents::
|
|
:depth: 1
|
|
:local:
|
|
:backlinks: none
|
|
|
|
------
|
|
|
|
|
|
1. RuntimeError: An attempt has been made to start a new process before the current process has finished its bootstrapping phase...
|
|
-----------------------------------------------------------------------------------------------------------------------------------
|
|
|
|
.. code-block:: console
|
|
|
|
RuntimeError:
|
|
An attempt has been made to start a new process before the
|
|
current process has finished its bootstrapping phase.
|
|
|
|
This probably means that you are not using fork to start your
|
|
child processes and you have forgotten to use the proper idiom
|
|
in the main module:
|
|
|
|
if __name__ == '__main__':
|
|
freeze_support()
|
|
...
|
|
|
|
The "freeze_support()" line can be omitted if the program
|
|
is not going to be frozen to produce an executable.
|
|
|
|
This is caused by the limitation of multiprocessing under windows OS. Please refer to `here <https://stackoverflow.com/a/24374798>`_ for more info.
|
|
|
|
**Solution**: To select a start method you use the ``D.features`` in the if __name__ == '__main__' clause of the main module. For example:
|
|
|
|
.. code-block:: python
|
|
|
|
import qlib
|
|
from qlib.data import D
|
|
|
|
|
|
if __name__ == "__main__":
|
|
qlib.init()
|
|
instruments = ["SH600000"]
|
|
fields = ["$close", "$change"]
|
|
df = D.features(instruments, fields, start_time='2010-01-01', end_time='2012-12-31')
|
|
print(df.head())
|
|
|
|
|
|
|
|
2. qlib.data.cache.QlibCacheException: It sees the key(...) of the redis lock has existed in your redis db now.
|
|
---------------------------------------------------------------------------------------------------------------
|
|
|
|
It sees the key of the redis lock has existed in your redis db now. You can use the following command to clear your redis keys and rerun your commands
|
|
|
|
.. code-block:: console
|
|
|
|
$ redis-cli
|
|
> select 1
|
|
> flushdb
|
|
|
|
If the issue is not resolved, use ``keys *`` to find if multiple keys exist. If so, try using ``flushall`` to clear all the keys.
|
|
|
|
.. note::
|
|
|
|
``qlib.config.redis_task_db`` defaults is ``1``, users can use ``qlib.init(redis_task_db=<other_db>)`` settings.
|
|
|
|
|
|
Also, feel free to post a new issue in our GitHub repository. We always check each issue carefully and try our best to solve them.
|
|
|
|
3. ModuleNotFoundError: No module named 'qlib.data._libs.rolling'
|
|
-----------------------------------------------------------------
|
|
|
|
.. code-block:: python
|
|
|
|
#### Do not import qlib package in the repository directory in case of importing qlib from . without compiling #####
|
|
Traceback (most recent call last):
|
|
File "<stdin>", line 1, in <module>
|
|
File "qlib/qlib/__init__.py", line 19, in init
|
|
from .data.cache import H
|
|
File "qlib/qlib/data/__init__.py", line 8, in <module>
|
|
from .data import (
|
|
File "qlib/qlib/data/data.py", line 20, in <module>
|
|
from .cache import H
|
|
File "qlib/qlib/data/cache.py", line 36, in <module>
|
|
from .ops import Operators
|
|
File "qlib/qlib/data/ops.py", line 19, in <module>
|
|
from ._libs.rolling import rolling_slope, rolling_rsquare, rolling_resi
|
|
ModuleNotFoundError: No module named 'qlib.data._libs.rolling'
|
|
|
|
- If the error occurs when importing ``qlib`` package with ``PyCharm`` IDE, users can execute the following command in the project root folder to compile Cython files and generate executable files:
|
|
|
|
.. code-block:: bash
|
|
|
|
python setup.py build_ext --inplace
|
|
|
|
- If the error occurs when importing ``qlib`` package with command ``python`` , users need to change the running directory to ensure that the script does not run in the project directory.
|
|
|
|
|
|
4. BadNamespaceError: / is not a connected namespace
|
|
----------------------------------------------------
|
|
|
|
.. code-block:: python
|
|
|
|
File "qlib_online.py", line 35, in <module>
|
|
cal = D.calendar()
|
|
File "e:\code\python\microsoft\qlib_latest\qlib\qlib\data\data.py", line 973, in calendar
|
|
return Cal.calendar(start_time, end_time, freq, future=future)
|
|
File "e:\code\python\microsoft\qlib_latest\qlib\qlib\data\data.py", line 798, in calendar
|
|
self.conn.send_request(
|
|
File "e:\code\python\microsoft\qlib_latest\qlib\qlib\data\client.py", line 101, in send_request
|
|
self.sio.emit(request_type + "_request", request_content)
|
|
File "G:\apps\miniconda\envs\qlib\lib\site-packages\python_socketio-5.3.0-py3.8.egg\socketio\client.py", line 369, in emit
|
|
raise exceptions.BadNamespaceError(
|
|
BadNamespaceError: / is not a connected namespace.
|
|
|
|
- The version of ``python-socketio`` in qlib needs to be the same as the version of ``python-socketio`` in qlib-server:
|
|
|
|
.. code-block:: bash
|
|
|
|
pip install -U python-socketio==<qlib-server python-socketio version>
|
|
|
|
|
|
5. TypeError: send() got an unexpected keyword argument 'binary'
|
|
----------------------------------------------------------------
|
|
|
|
.. code-block:: python
|
|
|
|
File "qlib_online.py", line 35, in <module>
|
|
cal = D.calendar()
|
|
File "e:\code\python\microsoft\qlib_latest\qlib\qlib\data\data.py", line 973, in calendar
|
|
return Cal.calendar(start_time, end_time, freq, future=future)
|
|
File "e:\code\python\microsoft\qlib_latest\qlib\qlib\data\data.py", line 798, in calendar
|
|
self.conn.send_request(
|
|
File "e:\code\python\microsoft\qlib_latest\qlib\qlib\data\client.py", line 101, in send_request
|
|
self.sio.emit(request_type + "_request", request_content)
|
|
File "G:\apps\miniconda\envs\qlib\lib\site-packages\socketio\client.py", line 263, in emit
|
|
self._send_packet(packet.Packet(packet.EVENT, namespace=namespace,
|
|
File "G:\apps\miniconda\envs\qlib\lib\site-packages\socketio\client.py", line 339, in _send_packet
|
|
self.eio.send(ep, binary=binary)
|
|
TypeError: send() got an unexpected keyword argument 'binary'
|
|
|
|
|
|
- The ``python-engineio`` version needs to be compatible with the ``python-socketio`` version, reference: https://github.com/miguelgrinberg/python-socketio#version-compatibility
|
|
|
|
.. code-block:: bash
|
|
|
|
pip install -U python-engineio==<compatible python-socketio version>
|
|
# or
|
|
pip install -U python-socketio==3.1.2 python-engineio==3.13.2
|