Help adding a second enemy in pygame

[gmill198]

This is my code for a space invaders-like game in pygame. How do I add a second enemy?

from pygame import *
import random


class Sprite:
    def __init__(self, xpos, ypos, filename):
        self.x = xpos
        self.y = ypos
        self.bitmap = image.load(filename)
        self.bitmap.set_colorkey((0,0,0))
    def set_position(self, xpos, ypos):
        self.x = xpos
        self.y = ypos
    def render(self):
        screen.blit(self.bitmap, (self.x, self.y))


def Intersect(s1_x, s1_y, s2_x, s2_y):
    if (s1_x > s2_x - 32) and (s1_x < s2_x + 32) and (s1_y > s2_y - 32) and (s1_y < s2_y + 32):
        return 1
    else:
        return 0


init()
screen = display.set_mode((640,480))
key.set_repeat(1, 1)
display.set_caption('Invaders')
backdrop = image.load('backdrop.bmp')


enemies = []

x = 0

for count in range(10):
    enemies.append(Sprite(50 * x + 50, 50, 'baddie.bmp'))
    x += 1

hero = Sprite(20, 400, 'hero.bmp')
ourmissile = Sprite(0, 480, 'heromissile.bmp')
enemymissile = Sprite(0, 480, 'baddiemissile.bmp')


quit = 0
enemyspeed = 3

while quit == 0:
    screen.blit(backdrop, (0, 0))


    for count in range(len(enemies)):
        enemies[count].x += + enemyspeed
        enemies[count].render()

    if enemies[len(enemies)-1].x > 590:
        enemyspeed = -3
        for count in range(len(enemies)):
            enemies[count].y += 5

    if enemies[0].x < 10:
        enemyspeed = 3
        for count in range(len(enemies)):
            enemies[count].y += 5

    if ourmissile.y < 479 and ourmissile.y > 0:
        ourmissile.render()
        ourmissile.y -= 5

    if enemymissile.y >= 480 and len(enemies) > 0:
        enemymissile.x = enemies[random.randint(0, len(enemies) - 1)].x
        enemymissile.y = enemies[0].y



    if Intersect(hero.x, hero.y, enemymissile.x, enemymissile.y):
        quit = 1

    for count in range(0, len(enemies)):
        if Intersect(ourmissile.x, ourmissile.y, enemies[count].x, enemies[count].y):
            del enemies[count]
            break

    if len(enemies) == 0:
        quit = 1


    for ourevent in event.get():
        if ourevent.type == QUIT:
            quit = 1
        if ourevent.type == KEYDOWN:
            if ourevent.key == K_RIGHT and hero.x < 590:
                hero.x += 5
            if ourevent.key == K_LEFT and hero.x > 10:
                hero.x -= 5
            if ourevent.key == K_SPACE:
                ourmissile.x = hero.x
                ourmissile.y = hero.y


    enemymissile.render()
    enemymissile.y += 5

    hero.render()

    display.update()
    time.delay(5)