Boto does not recognize ~.aws/credentials

Following the Quickstart in the docs and am unable to authenticate using my ~/.aws/credentials files (aws cli commands work OK):

>>> import boto3
>>> 
>>> for bucket in boto3.resource('s3').buckets.all():
...     print(bucket.name)
... 
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Python/2.7/site-packages/boto3/resources/collection.py", line 83, in __iter__
    for page in self.pages():
  File "/Library/Python/2.7/site-packages/boto3/resources/collection.py", line 161, in pages
    pages = [getattr(client, self._py_operation_name)(**params)]
  File "/Library/Python/2.7/site-packages/botocore/client.py", line 310, in _api_call
    return self._make_api_call(operation_name, kwargs)
  File "/Library/Python/2.7/site-packages/botocore/client.py", line 396, in _make_api_call
    operation_model, request_dict)
  File "/Library/Python/2.7/site-packages/botocore/endpoint.py", line 111, in make_request
    return self._send_request(request_dict, operation_model)
  File "/Library/Python/2.7/site-packages/botocore/endpoint.py", line 136, in _send_request
    request = self.create_request(request_dict, operation_model)
  File "/Library/Python/2.7/site-packages/botocore/endpoint.py", line 120, in create_request
    operation_name=operation_model.name)
  File "/Library/Python/2.7/site-packages/botocore/hooks.py", line 226, in emit
    return self._emit(event_name, kwargs)
  File "/Library/Python/2.7/site-packages/botocore/hooks.py", line 209, in _emit
    response = handler(**kwargs)
  File "/Library/Python/2.7/site-packages/botocore/signers.py", line 84, in handler
    return self.sign(operation_name, request)
  File "/Library/Python/2.7/site-packages/botocore/signers.py", line 119, in sign
    signer.add_auth(request=request)
  File "/Library/Python/2.7/site-packages/botocore/auth.py", line 621, in add_auth
    raise NoCredentialsError
botocore.exceptions.NoCredentialsError: Unable to locate credentials

[kadrach]

I have a similar issue too. The default “profile” for boto to use is an IAM profile.

Now I need to add an additional (non-default) profile. However boto3/botocore only pickup the ~.aws/credentials if both a default and other_profile are defined.

How do I not specify a default profile, and have an IAM profile be default, while also specifying other other_profile... in the credentials file?

[prayagupa]

weird in my case,

Had

boto3.setup_default_session(profile_name="aws-federated")                                        
boto3.setup_default_session(region_name='us-west-2')  

had to remove region part and it works

boto3.setup_default_session(profile_name="aws-federated")                                        
##boto3.setup_default_session(region_name='us-west-2')