"TypeError: string indices must be integers, not str" during boto3 aws execution

Question

I am trying to get AWS' VM list using Boto3's describe_instance method. I am getting the following error.

Traceback (most recent call last):
  File "pySkynet2.py", line 238, in <module>
    skynet.execute()
  File "pySkynet2.py", line 126, in execute
    self.verify('build')
  File "pySkynet2.py", line 77, in verify
    vm_list = self.cloud_forge.get_vm_list()
  File "/Users/ssrini358/workplace/Codes/COM_codes/Skynet/api2/cloudforge.py", line 952, in get_vm_list
    instance = self.get_instance(auto_instance['Reservations'][0]['Instances'][0]['InstanceId'])
TypeError: string indices must be integers, not str

Following is the code snippet.

    def get_vm_list(self):
        """
        look up all the instances for the cluster (autoscaling_group)
        :return: a list of associative arrays containing the instance_id, ip address and host name
        """
        try:
            instances = self.get_instances_for_autoscaling_group()
            vms = []
            for auto_instance in instances:
                instance = self.get_instance(auto_instance['Reservations'][0],['Instances'][0],['InstanceId'])
                host_name = ''
                for tag in instance['Reservations'][0]['Instances'][0]['Tags']:
                    if tag['Key'] == 'Name':
                        host_name = tag['Value']
                        break

                vms.append({'instance_id': instance['Reservations'][0]['Instances'][0]['InstanceId'],
                            'ip_addr': instance['Reservations'][0]['Instances'][0]['PrivateIpAddress'],
                            'host_name': host_name})

            return vms

I have tried ['Reservations'][0], as well. But I am not able to get the instanceId. Kindly help TIA

Does this answer your question? [Why am I seeing "TypeError: string indices must be integers"?](https://stackoverflow.com/questions/6077675/why-am-i-seeing-typeerror-string-indices-must-be-integers) — Prabhjot Singh Kainth, Dec 11 '19 at 05:55

score 0 · Accepted Answer · answered Dec 11 '19 at 06:10

0

Shouldn't it be like this since you already assigned the instance?

instances = self.get_instances_for_autoscaling_group()
vms = []
for auto_instance in instances:
    instance = self.get_instance(auto_instance['Reservations'][0],['Instances'][0],['InstanceId'])
    host_name = ''
    for tag in instance:

answered Dec 11 '19 at 06:10

timanix

94
1
3

I have tried this as well. Still getting the same error – sriramsm04 Dec 11 '19 at 11:47
``` instance = self.get_instance(auto_instance['Reservations'][0],['Instances'][0],['InstanceId']) TypeError: string indices must be integers, not str ``` – sriramsm04 Dec 11 '19 at 11:47

"TypeError: string indices must be integers, not str" during boto3 aws execution

1 Answers1