Use the default profile in an AWS shared credentials file

To use of the default credentials in this file, provide no connection parameters.

Example - Using an AWS Credential Profile in a Boto SDK connection method.

s3 = boto.connect_s3( 1
  host = host,
  is_secure = false,
  calling_format = boto.s3.connection.OrdinaryCallingFormat(),
  ) 2

1 The Boto SDK automatically reads the Access Key ID and Secret Access Key from the 
  shared AWS Credentials file. They do not need to be provided explicitly.
2 As the pool2 profile is not specified, the default credentials are used for this 
  connection.