python index out of range when item in list is none

Question

I keep getting IndexError: list index out of range but I know where the problem is in the json I am mapping.

server_names_and_ips = [
            (x['virtualMachine']['name'], x['virtualMachine']['network']['publicIpAddresses'][0]['ipAddress']) for x in
            s if x['virtualMachine']['network']['publicIpAddresses'][0]['ipAddress'] is not None]

The problem is x['virtualMachine']['network']['publicIpAddresses'][0]['ipAddress'] has a value you [] in one of the items returned. I tried to put the if condition in for it but that didnt work correctly. Is something wrong with how I wrote the if condition? The desired outcome who be...if it has [] dont add that item to list and move onto the next.

Share a sample json. As it is, the ask isn't clear.

Gro
– Gro

2019-07-28 22:35:53 +00:00
Commented Jul 28, 2019 at 22:35 — Gro
– Gro, Commented Jul 28, 2019 at 22:35

ers36 · Accepted Answer · 2019-07-28 22:29:42Z

3

Try checking if the list has any elements:

server_names_and_ips = [
        (x['virtualMachine']['name'], x['virtualMachine']['network']['publicIpAddresses'][0]['ipAddress']) for x in
        s if len(x['virtualMachine']['network']['publicIpAddresses']) > 0 and x['virtualMachine']['network']['publicIpAddresses'][0]['ipAddress'] is not None]

answered Jul 28, 2019 at 22:29

ers36

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