python代码大全简单？

class?Point:

??row=0

??col=0

??def?__init__(self,?row,?col):

????self.row=row

????self.col=col

??def?copy(self):

????return?Point(row=self.row,?col=self.col)

#初始框架

import?pygame

import?random

#初始化

pygame.init()

W=800

H=600

ROW=30

COL=40

size=(W,H)

window=pygame.display.set_mode(size)

pygame.display.set_caption('贪吃蛇')

bg_color=(255,255,255)

snake_color=(200,200,200)

head=Point(row=int(ROW/2),?col=int(COL/2))

head_color=(0,128,128)

snakes=[

??Point(row=head.row,?col=head.col+1),

??Point(row=head.row,?col=head.col+2),

??Point(row=head.row,?col=head.col+3)

]

#生成食物

def?gen_food():

??while?1:

????pos=Point(row=random.randint(0,ROW-1),?col=random.randint(0,COL-1))

????#

????is_coll=False

????#是否跟蛇碰上了

????if?head.row==pos.row?and?head.col==pos.col:

??????is_coll=True

????#蛇身子

????for?snake?in?snakes:

??????if?snake.row==pos.row?and?snake.col==pos.col:

????????is_coll=True

????????break

????if?not?is_coll:

??????break

??return?pos

#定义坐标

food=gen_food()

food_color=(255,255,0)

direct='left'???????#left,right,up,down

#

def?rect(point,?color):

??cell_width=W/COL

??cell_height=H/ROW

??left=point.col*cell_width

??top=point.row*cell_height

??pygame.draw.rect(

????window,?color,

????(left,?top,?cell_width,?cell_height)

??)

??pass

#游戏循环

quit=True

clock=pygame.time.Clock()

while?quit:

??#处理事件

??for?event?in?pygame.event.get():

????if?event.type==pygame.QUIT:

??????quit=False

????elif?event.type==pygame.KEYDOWN:

??????if?event.key==273?or?event.key==119:

????????if?direct=='left'?or?direct=='right':

??????????direct='up'

??????elif?event.key==274?or?event.key==115:

????????if?direct?==?'left'?or?direct?==?'right':

??????????direct='down'

??????elif?event.key==276?or?event.key==97:

????????if?direct?==?'up'?or?direct?==?'down':

??????????direct='left'

??????elif?event.key==275?or?event.key==100:

????????if?direct?==?'up'?or?direct?==?'down':

??????????direct='right'

??#吃东西

??eat=(head.row==food.row?and?head.col==food.col)

??#重新产生食物

??if?eat:

????food?=?gen_food()

??#处理身子

??#1.把原来的头，插入到snakes的头上

??snakes.insert(0,?head.copy())

??#2.把snakes的最后一个删掉

??if?not?eat:

????snakes.pop()

??#移动

??if?direct=='left':

????head.col-=1

??elif?direct=='right':

????head.col+=1

??elif?direct=='up':

????head.row-=1

??elif?direct=='down':

????head.row+=1

??#检测

??dead=False

??#1.撞墙

??if?head.col0?or?head.row0?or?head.col=COL?or?head.row=ROW:

????dead=True

??#2.撞自己

??for?snake?in?snakes:

????if?head.col==snake.col?and?head.row==snake.row:

??????dead=True

??????break

??if?dead:

????print('死了')

????quit=False

??#渲染——画出来

??#背景

??pygame.draw.rect(window,?bg_color,?(0,0,W,H))

??#蛇头

??for?snake?in?snakes:

????rect(snake,?snake_color)

??rect(head,?head_color)

??rect(food,?food_color)

??#

??pygame.display.flip()

??#设置帧频（速度）

??clock.tick(8)

#收尾工作

这是一个简易版贪吃蛇的代码，虽然结构简单，但是该有的功能都是完整的，可玩性也不错

使用python标准化数据的代码如下：

fromsklearnimportpreprocessing

importnumpyasnp

X=np.array([[1.,-1.,2.],[2.,0.,0.],[0.,1.,-1.]])

X_scaled=preprocessing.scale(X)

print(X_scaled)

```python#Python圣诞树代码foriinrange(1,6):forjinrange(1,i+1):print('*',end='')print('
')```

拓展：如果想改变树的形状，可以在代码中添加更多的控制参数，如在每一行中添加不同的空格数，使得树的形状不一样。同时可以通过添加HTML标签，使用CSS样式来改变圣诞树的颜色、背景和文字等等。