[issue39110] UserList-subclass Tree slicing changes the original list unexpectedly

2019-12-20 Thread Tarn Yeong Ching 


Tarn Yeong Ching  added the comment:

and more... It doesn't happen when Tree directly subclasses list.

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[issue39110] UserList-subclass Tree slicing changes the original list unexpectedly

2019-12-21 Thread Tarn Yeong Ching 


Tarn Yeong Ching  added the comment:

GOD... I see. Thank you very much!

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