(username=None, hostname=None)
return uid
Create an email address suitable for a UID on a GnuPG key.

    :param str username: The username portion of an email address.  If None,
                         defaults to the username of the running Python
                         process.

    :param str hostname: The FQDN portion of an email address. If None, the
                         hostname is obtained from gethostname(2).

    :rtype: str
    :returns: A string formatted as <username>@<hostname>.
Create an email address suitable for a UID on a GnuPG key.
Create an email address suitable for a UID on a GnuPG key .
def create_uid_email(username=None, hostname=None):
    """Create an email address suitable for a UID on a GnuPG key.

    :param str username: The username portion of an email address.  If None,
                         defaults to the username of the running Python
                         process.

    :param str hostname: The FQDN portion of an email address. If None, the
                         hostname is obtained from gethostname(2).

    :rtype: str
    :returns: A string formatted as <username>@<hostname>.
    """
    if hostname:
        hostname = hostname.replace(' ', '_')
    if not username:
        try: username = os.environ['LOGNAME']
        except KeyError: username = os.environ['USERNAME']

        if not hostname: hostname = gethostname()

        uid = "%s@%s" % (username.replace(' ', '_'), hostname)
    else:
        username = username.replace(' ', '_')
        if (not hostname) and (username.find('@') == 0):
            uid = "%s@%s" % (username, gethostname())
        elif hostname:
            uid = "%s@%s" % (username, hostname)
        else:
            uid = username

    return uid
def create_uid_email ( username = None , hostname = None ) : if hostname : hostname = hostname . replace ( ' ' , '_' ) if not username : try : username = os . environ [ 'LOGNAME' ] except KeyError : username = os . environ [ 'USERNAME' ] if not hostname : hostname = gethostname ( ) uid = "%s@%s" % ( username . replace ( ' ' , '_' ) , hostname ) else : username = username . replace ( ' ' , '_' ) if ( not hostname ) and ( username . find ( '@' ) == 0 ) : uid = "%s@%s" % ( username , gethostname ( ) ) elif hostname : uid = "%s@%s" % ( username , hostname ) else : uid = username return uid