打印方形
>>
for i in range(9):
print("* " * 9)
* * * * * * * * *
* * * * * * * * *
* * * * * * * * *
* * * * * * * * *
* * * * * * * * *
* * * * * * * * *
* * * * * * * * *
* * * * * * * * *
* * * * * * * * *
>>
stars = "* "
empty = " "
print(stars * 9)
for n in range(7):
print(stars + empty * 7 + stars)
print(stars * 9)
* * * * * * * * *
* *
* *
* *
* *
* *
* *
* *
* * * * * * * * *
>>