如何取出列表中字典的值並進行比對？python

按照妳的要求,遍歷貪吃蛇的坐標位置,並和隨機生成的坐標對比,如果相同就重新取值,不相同的時候輸出的Python程序如下

import?random

map_width=30

map_height=30

a?=?[{'x':?2,?'y':?4},?{'x':?5,?'y':?6},?{'x':?7,?'y':?8},?{'x':?4,?'y':?4}]

random_x=random.randint(3,map_width-8)

random_y=random.randint(3,map_height-8)

flag=True

for?i?in?range(len(a)):

if?random_x==a[i]['x']?and?random_y==a[i]['y']:

flag==False

break

if?flag==True:

print("random_x=%d,random_y=%d"%(random_x,random_y))

else:

random_x=random.randint(3,map_width-8)

random_y=random.randint(3,map_height-8)

源代碼(註意源代碼的縮進)