py.list bug in R2024a

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Tom Grieve
Tom Grieve 2024-7-23
评论： Steven Lord 2024-7-26
I believe I'm experiencing a bug in R2024a with py.list. After a clear all, I get the error No module or function named 'list'.:
clear all;res = py.list({"Name1","Name2","Name3"});
In this interface, the code runs just fine. When I run it locally, I get this:
>> clear all;res = py.list({"Name1","Name2","Name3"})
No module or function named 'list'.
I can get py.list to work again if I use another Python command. For example, this works:
>> handlers = py.logging.getLogger().handlers;
>> res = py.list({"Name1","Name2","Name3"});
>> clear all;res = py.list({"Name1","Name2","Name3"});
No module or function named 'list'.
I'm running MATLAB Version: 24.1.0.2628055 (R2024a) Update 4. I cannot replicate on R2023b.

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采纳的回答

Steven Lord
Steven Lord 2024-7-23
  4 个评论
显示 2更早的评论
Tom Grieve
Tom Grieve 2024-7-24
I can find the bug report now with no problem. I'm not sure what I was searching for, but I think I only used "python" as a keyword. I didn't connect my use of "clear all" with the behavior until after I searched, so the name of that bug report may not have meant anything to me.
Steven Lord
Steven Lord 2024-7-26
We tweaked the summary of the bug report to include part of the error message, hopefully that will make it more discoverable when people search for it.

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更多回答（1 个）

Avni Agrawal
Avni Agrawal 2024-7-23
Hi @Tom Grieve,
I understand that you are encountering an error when trying to access Python classes after using clear all in the command line for the R2024a release. I experienced a similar issue, and I found a workaround that worked for me. Executing clear classes allows MATLAB to locate and recreate the Python modules. For example:
clear all;res = py.list({"Name1","Name2","Name3"});
clear classes;
res = py.list({"Name1","Name2","Name3"});
I hope this helps!
  1 个评论
Tom Grieve
Tom Grieve 2024-7-23
Thanks for your help! I'll have to try this workaround and see if it works better than mine for my application.

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