GameObject.CompareTag  

// Immediate death trigger.
// Destroys any colliders that enter the trigger, if they are tagged player.
function OnTriggerEnter (other : Collider) {
    if (other.gameObject.CompareTag ("Player")) {
        Destroy (other.gameObject);
    }
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    void OnTriggerEnter(Collider other) {
        if (other.gameObject.CompareTag("Player"))
            Destroy(other.gameObject);
        
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    def OnTriggerEnter(other as Collider):
        if other.gameObject.CompareTag('Player'):
            Destroy(other.gameObject)