Python 数列から知りたい数字を探索しよう

import random

size = 10
max = 8
low = 0

high = size - 1
key = random.randint(1,max)
list_num = []
while size > 0:
list_num.append(random.randint(1,max))
size -= 1
list_num.sort()
flag = False
while low <= high:
middle = round*1
if key == list_num[middle]:
flag = True
break
elif key < list_num[middle]:
high = middle - 1
else:
low = middle + 1
print(list_num)
print("key = " + str(key))
if flag:
print(str(key) + " is found")
else:
print(str(key) + " is not found")

*1:low + high) / 2)
print( "low = " + str(low) + ",middle = " + str(middle) + ",high = " + str(high