fix(profiling): Use type()
instead when extracting frames
#3716
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When extract frame names, we should avoid accessing the
__class__
attribute as it can be overwritten in the class implementation. In this particular instance, theSimpleLazyObject
class in django wraps__class__
so when it is accessed, it can cause the underlying lazy object to be evaluation unexpectedly. To avoid this, use thetype()
builtin function which cannot be overwritten and will return the correct class.Note that this does not work with old style classes but since dropping python 2 support, we only need to consider new style classes.