old_contents: # coding: utf-8
  
  from boto.s3.connection import S3Connection
  
  connection = None
  
  def get_connection(context):
  
      if connection is None:
          boto_opts = {}
  
          if context.config.AWS_ROLE_BASED_CONNECTION==False:
              boto_opts.update({
                  'aws_access_key_id'    : context.config.AWS_ACCESS_KEY,
                  'aws_secret_access_key': context.config.AWS_SECRET_KEY,
                  })
  
          if context.config.BOTO_CONFIG:
              boto_opts.update(context.config.BOTO_CONFIG)
  
          connection = S3Connection(**boto_opts)
  
      return connection
  
new_contents: # coding: utf-8
  
  from boto.s3.connection import S3Connection
  
  connection = None
  
  def get_connection(context):
      global connection
  
      if connection is None:
          boto_opts = {}
  
          if context.config.AWS_ROLE_BASED_CONNECTION==False:
              boto_opts.update({
                  'aws_access_key_id'    : context.config.AWS_ACCESS_KEY,
                  'aws_secret_access_key': context.config.AWS_SECRET_KEY,
                  })
  
          if context.config.BOTO_CONFIG:
              boto_opts.update(context.config.BOTO_CONFIG)
  
          connection = S3Connection(**boto_opts)
  
      return connection
  
subject: Fix global variable declaration