從python中的文件中附加特定單詞到列表

Question

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我正在寫一個程序，它從50,000個單詞的文件中讀取，它需要獲得沒有字母'e'的單詞的百分比。我可以讓程序打印所有沒有e的單詞，但是我想把它們附加到列表中，以便我可以得到列表中元素的總和。我現在擁有的每一次運行結果都是0。它也產生了正確的總量。對不起，我不是Python中最好的。

f=open("hardwords.txt") 

def has_no_e(f): 
    words = [] 
    sum_words= len(words) 
    total = sum(1 for s in f) 
    print total 
    print sum_words 
    letter = 'e' 
    for line in f: 
     for l in letter: 
      if l in line: 
       break 
     else: 
      words.append(line) 

has_no_e(f) 

Answer 1

你不需要收集單詞，只需要數它們。

未經測試：

total = 0 
without_e = 0 
with open("hardwords.txt") as f: 
    for line in f: 
     total = total + 1 
     if not 'e' in line: 
      without_e = without_e + 1 

percentage = float(without_e)/float(total) 

Answer 2

這個怎麼樣：

def has_no_e(): 
    with open(path, "r") as f: 
     words = [word.strip() for line in f.readlines() for word in line.strip().split(',')] 
     words_without_e = [word for word in words if 'e' not in word] 
     print len(words), words 
     print len(words_without_e), words_without_e 

has_no_e() 

現在你只需要計算百分比

Answer 3

這確實就是這麼回事，

def has_no_e(path): 
    total_words = 0 
    words_without_e = 0 
    with open(path, "r") as f: 
     for line in f: 
      words = line.lower().split() 
      total_words += len(words) 
      words_without_e += sum("e" not in w for w in words) 

    return (float(words_without_e)/total_words)*100 

Answer 4

這是一個possibl e方式：

with open('G:\Tmp\demo.txt', 'r') as f: 
    total = 0 
    count = 0 
    for line in f: 
     words = line.split() 
     total = total + len(words) 
     count = count + len([w for w in words if w.find('e') > 0]) 

print 'Total word:{0}, counted:{1}'.format(total, count)