s = ['12','22','23','31','123','224']
res =s[0]
for i in range(1,len(s)):
if s[i] >= res:
res =s[i]
print(res)
执行上述程序后,输出的结果是( )
s,n=0,8
while True:
s+=n
if s>14:
break
n-=2
print(n,s)
执行程序后,输出结果可能是( )
n = int(input())
a,b,num = 2,1,2
for i in range(n-1):
print(num)
方框中的代码由以下三部分组成:①num += a / b ②a = a + b ③b = a - b代码顺序正确的选项是( )
程序代码如下:
from PIL import Image
import numpy as np
import matplotlib.pyplot as plt
img=np.array(Image.open("chenchen.jpg").convert("L"))
rows,cols=img.shape
for i in range(rows):
for j in range(cols):
if():
img[i,j]=1
else:
img[i,j]=0
plt.imshow(img,cmap="gray")
plt.show()
下列说法正确的是( )