NoneType object is not subscriptable

Question

list1     quot name1 quot    quot info1 quot   10  list2     quot name2 quot    quot info2 quot   30  list3     quot name3 quot    quot info3 quot   50  MASTERLIST    list1  list2  list3    def printer lst       print   quot Available Lists  quot       for x in range len lst            print  lst x   0   This code is returning the  quot  NoneType  object is not subscriptable quot  error when I try and run printer MASTERLIST   What did I do wrong

User · Answer

The print   function returns None  You are trying to index None  You can not  because  NoneType  object is not subscriptable   Put the  0  inside the brackets  Now you re printing everything  and not just the first term

User · Answer

The  0  needs to be inside the

User · Answer

The indexing e g   0  should occour inside of the print

User · Answer

list1     name1    info1   10  list2     name2    info2   30  list3     name3    info3   50   def printer  lists       for  list in lists          for ele in  list              print ele  end                 print    printer list1  list2  list3

User · Answer

Point A  Don t use list as a variable name Point B  You don t need the  0  just  print list x

User · Answer

Don t use list as a variable name for it shadows the builtin   And there is no need to determine the length of the list  Just iterate over it   def printer data       for element in data          print element 0     Just an addendum  Looking at the contents of the inner lists I think they might be the wrong data structure  It looks like you want to use a dictionary instead

[python] 'NoneType' object is not subscriptable?

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