[Python] Is there a way to check if a variable is of type List[List[str]] or of type List[str]...

I want to do something like :

if exact_type(var) == List[List[str]]:
do something
elif exact_type(var) == List[str]:
do another thing


but all I found was the type(var) function which would only return list. How can I check for the exact type of the object?

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