Import of LocalReadoutError from qiskit_experiments.library in IBM Quantum Lab #1050
Comments
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Problem seems to exist for other applications using the scikit-learn package as well. Downgrading to scikit-learn 1.1.0 using the command |
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Hmm, while it seems like this is an issue outside of qiskit-experiments and has a workaround, I think we might want to address it by pushing the scikit-learn imports lower into the stack so that most users will not encounter them. |
### Summary This commit pushes the import of scikit-learn lower into the code, so that it does not occur until first usage. ### Details and comments Previously, scikit-learn was in a `try` block which allowed for code that did not use scikit-learn to work fine when it was not installed. However, sometimes scikit-learn can be installed but have errors (like in #1050) which were not caught by the `try` block. Further delaying the import can help in this case. Additionally, scikit-learn is a little bit of a slow import, so not importing it when it is not needed gives a little bit of efficiency (maybe; mostly it imports scipy modules but those might get imported any way by other analysis code). --------- Co-authored-by: Helena Zhang <[email protected]>
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I removed the 0.5.0 milestone because #1061 was merged. I will leave this open until |
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Informations
What is the current behavior?
When using
from qiskit_experiments.library import LocalReadoutErrorin the IBM Quantum Lab, the error notificationAttributeError: module 'sklearn.metrics._dist_metrics' has no attribute 'DistanceMetric32'is printed and the requested import does not happen.Steps to reproduce the problem
Use 'from qiskit_experiments.library import LocalReadoutError' in IBM Quantum Lab.
What is the expected behavior?
Import of LocalReadoutError
Suggested solutions
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