Animation.Play
Play(mode: PlayMode = PlayMode.StopSameLayer): bool;
bool Play(PlayMode mode = PlayMode.StopSameLayer);
def Play(mode as PlayMode = PlayMode.StopSameLayer) as bool
Play(animation: string, mode: PlayMode = PlayMode.StopSameLayer): bool;
bool Play(string animation, PlayMode mode = PlayMode.StopSameLayer);
def Play(animation as string, mode as PlayMode = PlayMode.StopSameLayer) as bool
Description

Plays animation without any blending.

Play() will start animation with name animation, or play the default animation. The animation will be played abruptly without any blending.

If mode is PlayMode.StopSameLayer then all animations in the same layer will be stopped. If mode is PlayMode.StopAll then all animations currently playing will be stopped.

If the animation is already playing, other animations will be stopped but the animation will not rewind to the beginning.

If the animation is not set to be looping it will be stopped and rewinded after playing.

Play() will return false if animation can't be played (no animation clip or no default animation).
	// Plays the default animation
	animation.Play();
using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    void Example() {
        animation.Play();
    }
}
import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	def Example() as void:
		animation.Play()

For a specific animation, you can call the animation with play as well.
	// Plays the walk animation - stops all other animations in the same layer
	animation.Play("walk");
	// Plays the walk animation - stops all other animations
	animation.Play("walk", PlayMode.StopAll);
using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    void Example() {
        animation.Play("walk");
        animation.Play("walk", PlayMode.StopAll);
    }
}
import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	def Example() as void:
		animation.Play('walk')
		animation.Play('walk', PlayMode.StopAll)