A netrc instance has the following methods:
(login, account, password)of authenticators for host. If the netrc file did not contain an entry for the given host, return the tuple associated with the `default' entry. If neither matching host nor default entry is available, return
Instances of netrc have public instance variables:
(login, account, password)tuples. The `default' entry, if any, is represented as a pseudo-host by that name.