Improved Inference of List Element Types
IntelliJ's Python plugin correctly identifies the type of a list variable that contains elements of a custom class (e.g.,
if i have
my_list: list[MyObject] = [myObject1, myObject2]and hover above my_list, i can see that it is a list with elements of type MyObject.
However, after extracting an individual element from this list, IntelliJ does not seem to retain the type information of the extracted element.
For example, when assigning the first element of the list to a new variable:
first_obejct = my_list[0]
IntelliJ does not infer that first_obejct is of type MyObject. This leads to a lack of autocompletion and relevant suggestions for the first_obejct variable.
There are workarounds like first_obejct: MyObject = my_list[0]
however, it would be convenient if it could infer the type itself.
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Hello!
IntelliJ's Python plugin correctly identifies the type of a list variable that contains elements of a custom class, but it doesn't retain the type information after extracting an element from the list. For instance, when you assign the first element of the list to a new variable (first_object = my_list[0]), IntelliJ doesn't infer that first_object is of type MyObject, leading to a lack of autocompletion and relevant suggestions.
While workarounds like explicitly annotating the type (first_object: MyObject = my_list[0]) exist, it would indeed be more convenient if IntelliJ inferred the type automatically. This could be a limitation of the current IntelliJ plugin. You might consider providing feedback to the IntelliJ team or checking their forums and support channels for any updates or solutions.
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Feel free to create a new bug report on YouTrack at and provide a valid example so we can try to replicate it from our side and confirm it - https://youtrack.jetbrains.com/newIssue?project=PY