pattern=input("请输入你要选择的模式：")whileTrue:ifpattern=="A":row=eval(input("请输入行数："))foriinrange(1,row+1):forjinrange(1,i+1):print(j,end="")print("")elifpattern=="B":row=eval(input("请输入行数："))foriinrange(1,row+1):forjinrange(1,row-i+2):print(j,end="")print("")
