我需要創建一個程序來分析文件中的一段文本，然后進行計數：多少字單詞的平均長度每個單詞出現多少次字母表中每個字母開頭有多少個單詞到目前為止，我已經成功完成了前兩個要點（如下所示），fileName = open(input('Please enter the full name of the file: '), 'r') w = [len(word) for line in fileName for word in line.rstrip().split(" ")] total_w = len(w) avg_w = sum(w) / total_w print('The total number of words in this file is:', total_w) print('The average length of the words in this file is:', avg_w)
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幕布斯6054654
TA貢獻1876條經驗 獲得超7個贊
collections.Counter使得這相對簡單。我用來re.findall(r'[\w]+', data)查找單詞（單詞是帶有字母、下劃線和數字的東西）。根據需要進行調整。
import re
from collections import Counter
fn = input('Please enter the full name of the file: ')
with open(fn, 'r') as f:
? ? words = Counter(re.findall(r'[\w]+', f.read()))
? ? # use words = Counter(f.read().split()) if everything split by spaces
? ? # adjust regular expression depending on whether you want or don't want
? ? # stuff like numbers to be counted as "words"
print('Total number of words:', sum(words.values()))
# this is weighted by word occurrence, not sure whether this is correct
print('Average length of words:',?
? ? ? sum(len(w) * o for w, o in words.items()) / sum(words.values()))
print('Word occurrence:', words)
# this only shows letters that actually occur. If you need all letters of?
# the alphabet, you have to add the rest
print('Start letter occurrence', Counter(w[0] for w in words.elements()))
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