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in Python by (47.6k points)

val = "" 

del val 

if val is None: 


I ran above code but got NameError: name 'val' is not defined.

How to decide whether a variable is null, and avoid NameError?

1 Answer

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by (106k points)

You can check if val is None by using the below mentioned piece of code:-

if val is None: 


To know more about this you can have a look at the following video tutorial:-


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