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Author: SunsetWolf

.github/workflows/test_qlib_from_pip.yml

@@ -38,6 +38,9 @@ jobs:
       run: |
         python -m pip install pywinpty --only-binary=:all:
 
+    # # joblib was released on 2025-05-04 with version 1.5.0, in which _backend_args was removed and replaced by _backend_kwargs.
+    # This change caused the application to fail, so the version of joblib is restricted here. 
+    # This restriction will be removed in the next release. The current qlib version is: 0.9.6
     - name: Qlib installation test
       run: |
         python -m pip install pyqlib

qlib/utils/paral.py

@@ -22,6 +22,8 @@ def __init__(self, *args, **kwargs):
         maxtasksperchild = kwargs.pop("maxtasksperchild", None)
         super(ParallelExt, self).__init__(*args, **kwargs)
         if isinstance(self._backend, MultiprocessingBackend):
+            # 2025-05-04 joblib released version 1.5.0, in which _backend_args was removed and replaced by _backend_kwargs. 
+            # Ref: https://github.com/joblib/joblib/pull/1525/files#diff-e4dff8042ce45b443faf49605b75a58df35b8c195978d4a57f4afa695b406bdc
             if joblib.__version__ < "1.5.0":
                 self._backend_args["maxtasksperchild"] = maxtasksperchild  # pylint: disable=E1101
             else: