七律

s = "钟山风雨起苍黄，百万雄师过大江。\虎踞龙盘今胜昔，天翻地覆慨而慷。\已将神勇追穷寇，不可沽名学霸王。\天若有情天亦老，人间正道是沧桑。"
lines = ""
s= s.split("。\\")
print(s[3])
s[3].replace("。","")
print(s)
for i in s:
    # print(i)
    s = i.split("，")
    lines+=s[0]+"\n"
    lines += s[1] + "\n"
print(lines)
fo = open("七律.txt","w")
fo.write(lines)
fo.close()