I want to get the value of accessKey from the below output from access\_key in python.
Please tell me how can I iterate over it and get the value of `accessKey = ABCDEFGHIJ`.

```
access_key = [SIM_IdentityOption(
identity=SIM_Identity(displayName='system-3b07c9ab-e049-42cf-b447-d1895c799dcd',
                      creationTime=1478611077.671846,
                      identityType=0,
                      enabled=True,
                      canonicalId='805821d085f1de0860dccdd5c8',
                      modificationTime=1478611077.734763,
                      apiKeys=[SIM_ApiKey(secretKey=None, creationTime=1478611077.73346, accessKey='ABCDEFGHIJ', enabled=True)],
                      email='system@internal.amplidata.com',
                      parentAccountCanonicalId=None))
          ]

```