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Solved: How do I fix “Native JS does not support indexing” error when try to append element into Python list

Problem Symptom

I am trying to append those elements into a list, and encounters the error Native JS does not support indexing, how do I fix it?

Sample code as below:

n = -1
lista = []
while n!= 0:
n = int(input())
print(max(lista), lista.index(max(lista)))

The detailed error message is as below:

Native JS does not support indexing

Follow the below solution steps to resolve “Native JS does not support indexing” error.


The append() method called incorrectly.

Call lista.append(n) instead of lista.append[n]

Alex Lim is a certified IT Technical Support Architect with over 15 years of experience in designing, implementing, and troubleshooting complex IT systems and networks. He has worked for leading IT companies, such as Microsoft, IBM, and Cisco, providing technical support and solutions to clients across various industries and sectors. Alex has a bachelor’s degree in computer science from the National University of Singapore and a master’s degree in information security from the Massachusetts Institute of Technology. He is also the author of several best-selling books on IT technical support, such as The IT Technical Support Handbook and Troubleshooting IT Systems and Networks. Alex lives in Bandar, Johore, Malaysia with his wife and two chilrdren. You can reach him at [email protected] or follow him on Website | Twitter | Facebook

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