, Need to be Resolved! How to .append( ) something to a variable oriented to None?

Question

A simple code. And pleas check the line 7 in try block, why there is invalid syntaxes?
https://code.sololearn.com/c40ABnM9lSLb/?ref=app

Answer 1

So there is no way to append something to a variable inlined to "None", because 'None' is an empty hole.

Answer 2

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