How to use the pexpect.spawn.__init__ function in pexpect

if not isinstance(fd, int) and hasattr(fd, 'fileno'):
            fd = fd.fileno()

        if not isinstance(fd, int):
            raise ExceptionPexpect(
                "The fd argument is not an int. If this is a command string then maybe you want to use pexpect.spawn.")

        try:  # make sure fd is a valid file descriptor
            os.fstat(fd)
        except OSError:
            raise ExceptionPexpect("The fd argument is not a valid file descriptor.")

        self.args = None
        self.command = None
        spawn.__init__(self, None, args, timeout, maxread, searchwindowsize, logfile)
        self.child_fd = fd
        self.own_fd = False
        self.closed = False
        self.name = '' % fd

def __init__(self, command, lava_timeout, logger=None, cwd=None):
        if not lava_timeout or not isinstance(lava_timeout, Timeout):
            raise LAVABug("ShellCommand needs a timeout set by the calling Action")
        if not logger:
            raise LAVABug("ShellCommand needs a logger")
        if sys.version_info[0] == 2:
            pexpect.spawn.__init__(
                self, command,
                timeout=lava_timeout.duration,
                cwd=cwd,
                logfile=ShellLogger(logger),
            )
        elif sys.version_info[0] == 3:
            pexpect.spawn.__init__(
                self, command,
                timeout=lava_timeout.duration,
                cwd=cwd,
                logfile=ShellLogger(logger),
                encoding='utf-8',
            )
        self.name = "ShellCommand"
        self.logger = logger
        # set a default newline character, but allow actions to override as neccessary

def __init__ (self, timeout=30, maxread=2000, searchwindowsize=None,
                    logfile=None, cwd=None, env=None, ignore_sighup=True, echo=True,
                    options={}, encoding=None, codec_errors='strict',
                    debug_command_string=False):

        spawn.__init__(self, None, timeout=timeout, maxread=maxread,
                       searchwindowsize=searchwindowsize, logfile=logfile,
                       cwd=cwd, env=env, ignore_sighup=ignore_sighup, echo=echo,
                       encoding=encoding, codec_errors=codec_errors)

        self.name = ''

        #SUBTLE HACK ALERT! Note that the command that SETS the prompt uses a
        #slightly different string than the regular expression to match it. This
        #is because when you set the prompt the command will echo back, but we
        #don't want to match the echoed command. So if we make the set command
        #slightly different than the regex we eliminate the problem. To make the
        #set command different we add a backslash in front of $. The $ doesn't
        #need to be escaped, but it doesn't hurt and serves to make the set
        #prompt command different than the regex.

        # used to match the command-line prompt

def __init__(self, channel, *args, **kwargs):
    pexpect.spawn.__init__(self, None, *args, **kwargs)
    self.channel = channel
    self.child_fd = None
    self.closed = False
    self.name = '' % channel.get_id()

def __init__ (self, timeout=30, maxread=2000, searchwindowsize=None,
                    logfile=None, cwd=None, env=None, ignore_sighup=True, echo=True,
                    options={}, encoding=None, codec_errors='strict'):

        spawn.__init__(self, None, timeout=timeout, maxread=maxread,
                       searchwindowsize=searchwindowsize, logfile=logfile,
                       cwd=cwd, env=env, ignore_sighup=ignore_sighup, echo=echo,
                       encoding=encoding, codec_errors=codec_errors)

        self.name = ''

        #SUBTLE HACK ALERT! Note that the command that SETS the prompt uses a
        #slightly different string than the regular expression to match it. This
        #is because when you set the prompt the command will echo back, but we
        #don't want to match the echoed command. So if we make the set command
        #slightly different than the regex we eliminate the problem. To make the
        #set command different we add a backslash in front of $. The $ doesn't
        #need to be escaped, but it doesn't hurt and serves to make the set
        #prompt command different than the regex.

        # used to match the command-line prompt

try:
    import xmltodict
    HAS_XMLTODICT = True
except ImportError as e:
    HAS_XMLTODICT = False
    XMLTODICT_IMPORT_ERR = e

HAS_PEXPECT = False
try:
    import pexpect
    # echo was added in pexpect 3.3+ which is newer than the RHEL package
    # we can only use pexpect for kerb auth if echo is a valid kwarg
    # https://github.com/ansible/ansible/issues/43462
    if hasattr(pexpect, 'spawn'):
        argspec = getargspec(pexpect.spawn.__init__)
        if 'echo' in argspec.args:
            HAS_PEXPECT = True
except ImportError as e:
    pass

# used to try and parse the hostname and detect if IPv6 is being used
try:
    import ipaddress
    HAS_IPADDRESS = True
except ImportError:
    HAS_IPADDRESS = False

display = Display()


class Connection(ConnectionBase):

def __init__(self, sock, *args, **kwargs):
    pexpect.spawn.__init__(self, None, *args, **kwargs)
    self.child_fd = sock.fileno()
    self.closed = False
    self.name = '' % self.child_fd

def __init__(self, command, lava_timeout, logger=None, cwd=None):
        if not lava_timeout or not isinstance(lava_timeout, Timeout):
            raise LAVABug("ShellCommand needs a timeout set by the calling Action")
        if not logger:
            raise LAVABug("ShellCommand needs a logger")
        if sys.version_info[0] == 2:
            pexpect.spawn.__init__(
                self, command,
                timeout=lava_timeout.duration,
                cwd=cwd,
                logfile=ShellLogger(logger),
            )
        elif sys.version_info[0] == 3:
            pexpect.spawn.__init__(
                self, command,
                timeout=lava_timeout.duration,
                cwd=cwd,
                logfile=ShellLogger(logger),
                encoding='utf-8',
            )
        self.name = "ShellCommand"
        self.logger = logger
        # set a default newline character, but allow actions to override as neccessary
        self.linesep = LINE_SEPARATOR
        self.lava_timeout = lava_timeout