[Python] Fix: TypeError: NoneType object is not subscriptable

Code:

myvar = None
value = myvar[0]

Error:

TypeError Traceback (most recent call last)
<ipython-input-15-eb725f3095a2> in <cell line: 2>()
      1 myvar = None
----> 2 value = myvar[0]

TypeError: 'NoneType' object is not subscriptable

The above example gives an easy demostration of the "TypeError: 'NoneType' object is not subscriptable".

As you may see on line 1, we have a list that is assigned None, i.e. it does not refer to any Python data structure such as list, tuple, or dictionary, so when we try to access its elements of this object we get a TypeError of NoneType.

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