old_contents: """
  PynamoDB lowest level connection
  """
  
  from pynamodb.connection.base import Connection
  from pynamodb.connection.table import TableConnection
  
new_contents: """
  PynamoDB lowest level connection
  """
  
  from pynamodb.connection.base import Connection
  from pynamodb.connection.table import TableConnection
  
  
  __all__ = [
      "Connection",
      "TableConnection",
  ]
  
subject: Add explicit export to connection.py to fix mypy error (#1063)