# replace with your code here
f = open('D:\python\作业一素材.txt',encoding='utf-8')
txt = f.read()
f.close()
line1 = txt.splitlines()
line2 = line1[-3]
word = line2[-7:-1]
length = len(word)
print(length)
如果所写代码复杂,且没有良好的注释,那么请在这里补充解释。