1.先写一个输出"W"的的文件
1 import time 2 k=int(input("please input your lines:")) 3 for i in range(0,k): 4 for j in range(0,i): 5 print(" ",end="") 6 print("*",end="") 7 time.sleep(0.05) 8 for j in range(0,2*k-2*i): 9 print(" ",end="") 10 print("*",end="") 11 time.sleep(0.05) 12 for j in range(0,2*i): 13 print(" ",end="") 14 print("*",end="") 15 time.sleep(0.05) 16 for j in range(0,2*k-2*i): 17 print(" ",end="") 18 print("*",end="") 19 time.sleep(0.05) 20 for j in range(0,i): 21 print(" ",end="") 22 print("\n")