How to use the napalm.base.constants function in napalm

def transform_lldp_capab(capabilities):
    if capabilities and isinstance(capabilities, str):
        capabilities = capabilities.strip().lower().split(",")
        return sorted(
            [constants.LLDP_CAPAB_TRANFORM_TABLE[c.strip()] for c in capabilities]
        )
    else:
        return []

def ping(self,
             destination,
             source=C.PING_SOURCE,
             ttl=C.PING_TTL,
             timeout=C.PING_TIMEOUT,
             size=C.PING_SIZE,
             count=C.PING_COUNT,
             vrf=C.PING_VRF):

        deadline = timeout * count

        command = "ping %s " % destination
        command += "-t %d " % int(ttl)
        command += "-w %d " % int(deadline)
        command += "-s %d " % int(size)
        command += "-c %d " % int(count)
        if source != "":
            command += "interface %s " % source

def ping(
        self,
        destination,
        source=c.PING_SOURCE,
        ttl=c.PING_TTL,
        timeout=c.PING_TIMEOUT,
        size=c.PING_SIZE,
        count=c.PING_COUNT,
        vrf=c.PING_VRF,
    ):
        """
        Executes ping on the device and returns a dictionary with the result

        :param destination: Host or IP Address of the destination
        :param source (optional): Source address of echo request
        :param ttl (optional): Maximum number of hops
        :param timeout (optional): Maximum seconds to wait after sending final packet
        :param size (optional): Size of request (bytes)
        :param count (optional): Number of ping request to send

def ping(
        self,
        destination,
        source=C.PING_SOURCE,
        ttl=C.PING_TTL,
        timeout=C.PING_TIMEOUT,
        size=C.PING_SIZE,
        count=C.PING_COUNT,
        vrf=C.PING_VRF,
    ):
        """
        Execute ping on the device and returns a dictionary with the result.

        Output dictionary has one of following keys:
            * success
            * error
        In case of success, inner dictionary will have the followin keys:
            * probes_sent (int)
            * packet_loss (int)
            * rtt_min (float)

def ping(
        self,
        destination,
        source=C.PING_SOURCE,
        ttl=C.PING_TTL,
        timeout=C.PING_TIMEOUT,
        size=C.PING_SIZE,
        count=C.PING_COUNT,
        vrf=C.PING_VRF,
    ):
        """
        Execute ping on the device and returns a dictionary with the result.

        Output dictionary has one of following keys:
            * success
            * error
        In case of success, inner dictionary will have the followin keys:
            * probes_sent (int)
            * packet_loss (int)
            * rtt_min (float)

def ping(self,
             destination,
             source=C.PING_SOURCE,
             ttl=C.PING_TTL,
             timeout=C.PING_TIMEOUT,
             size=C.PING_SIZE,
             count=C.PING_COUNT,
             vrf=C.PING_VRF):
        """Execute ping on the device and returns a dictionary with the result."""

        ping_dict = {}
        ping_caps = self._ping_caps()

        command = 'ping {}'.format(destination)
        command += ' repetitions {}'.format(count)
        command += ' timeout {}'.format(timeout)
        if 'data-size' in ping_caps:
            command += ' data-size {}'.format(size)
        if source != '' and 'source' in ping_caps:

def ping(
        self,
        destination,
        source=c.PING_SOURCE,
        ttl=c.PING_TTL,
        timeout=c.PING_TIMEOUT,
        size=c.PING_SIZE,
        count=c.PING_COUNT,
        vrf=c.PING_VRF,
    ):
        """
        Execute ping on the device and returns a dictionary with the result.
        Output dictionary has one of following keys:
            * success
            * error
        In case of success, inner dictionary will have the followin keys:
            * probes_sent (int)
            * packet_loss (int)
            * rtt_min (float)
            * rtt_max (float)
            * rtt_avg (float)
            * rtt_stddev (float)
            * results (list)
        'results' is a list of dictionaries with the following keys:

def ping(
        self,
        destination,
        source=c.PING_SOURCE,
        ttl=c.PING_TTL,
        timeout=c.PING_TIMEOUT,
        size=c.PING_SIZE,
        count=c.PING_COUNT,
        vrf=c.PING_VRF,
    ):
        """
        Execute ping on the device and returns a dictionary with the result.
        Output dictionary has one of following keys:
            * success
            * error
        In case of success, inner dictionary will have the followin keys:
            * probes_sent (int)
            * packet_loss (int)
            * rtt_min (float)
            * rtt_max (float)
            * rtt_avg (float)
            * rtt_stddev (float)
            * results (list)

def traceroute(
        self,
        destination,
        source=c.TRACEROUTE_SOURCE,
        ttl=c.TRACEROUTE_TTL,
        timeout=c.TRACEROUTE_TIMEOUT,
        vrf=c.TRACEROUTE_VRF,
    ):

        _HOP_ENTRY_PROBE = [
            r"\s+",
            r"(",  # beginning of host_name (ip_address) RTT group
            r"(",  # beginning of host_name (ip_address) group only
            r"([a-zA-Z0-9\.:-]*)",  # hostname
            r"\s+",
            r"\(?([a-fA-F0-9\.:][^\)]*)\)?",  # IP Address between brackets
            r"(?:\s+\(AS\s+[0-9]+\))?",  # AS number -- may or may not be present
            r")?",  # end of host_name (ip_address) group only
            # also hostname/ip are optional -- they can or cannot be specified
            # if not specified, means the current probe followed the same path as the previous
            r"\s+",
            r"(\d+\.\d+)\s+ms",  # RTT

def traceroute(
        self,
        destination,
        source=c.TRACEROUTE_SOURCE,
        ttl=c.TRACEROUTE_TTL,
        timeout=c.TRACEROUTE_TIMEOUT,
        vrf=c.TRACEROUTE_VRF,
    ):

        _HOP_ENTRY_PROBE = [
            r"\s+",
            r"(",  # beginning of host_name (ip_address) RTT group
            r"(",  # beginning of host_name (ip_address) group only
            r"([a-zA-Z0-9\.:-]*)",  # hostname
            r"\s+",
            r"\(?([a-fA-F0-9\.:][^\)]*)\)?",  # IP Address between brackets
            r"(?:\s+\(AS\s+[0-9]+\))?",  # AS number -- may or may not be present
            r")?",  # end of host_name (ip_address) group only
            # also hostname/ip are optional -- they can or cannot be specified
            # if not specified, means the current probe followed the same path as the previous
            r"\s+",