python - 计算文件中所有单词的平均单词长度？

Question

所以我需要编写一个程序来计算文件中所有单词的平均单词长度。到目前为止，我已经有了这个，但我完全迷失了

newfile=input('Enter file name: ')
f=open(newfile,'r')
count1=0
count2=0
for line in f:
    count1+=1
    words=line.rstrip().split()
for word in words:
    count2+=1
average=count1/count2
print('Average words per line: ',average)

Answer 1

w_i = 词的长度 i

w_avg = ∑ w_i/N

with open(input('Enter file name: '),'r') as f:
    w = [len(word) for line in f for word in line.rstrip().split(" ")]
    w_avg = sum(w)/len(w)