<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def save_password(entry, password, username=None):
 """ Saves the given password in the user's keychain. :param entry: The entry in the keychain. This is a caller specific key. :param password: The password to save in the keychain. :param username: The username to get the password for. Default is the current user. """


    if username is None:
        username = get_username()

    has_keychain = initialize_keychain()

    if has_keychain:
        try:
            keyring.set_password(entry, username, password)
        except Exception as e:
            log.warn("Unable to set password in keyring. Continuing..")
            log.debug(e)