第5课

a= ["23", 34, 56,"print", None]
b = int(a[0]) + a[2]
print(b)



import random
a= ["print","input", "while", "if", "else", "break","continue"]
while True:
    index = random. randint(0,6)
    print(a[index])




a = ["print", "input","while", "if", "else", "break","continue"]
tmp = a[1]
a[1] = a[5]
a[5] = tmp
print(a)




bug