我有一个txt文件。如何获取字典键值并打印它们出现在其中的文本行？

Question

我有一个txt文件。我已经编写了代码，可以找到唯一的单词和每个单词在该文件中出现的次数。我现在需要弄清楚如何打印这些单词的线条。我该怎么做呢？

这里是一个示例输出:分析什么文件: itsy_bitsy_spider.txt

文件itsy_bitsy_spider.txt itsy的一致性:总数:2行:1: ITSY Bitsy蜘蛛爬上水龙:4: ITSY Bitsy蜘蛛又爬上了喷口

#this function will get just the unique words without the stop words. 
def openFiles(openFile):

    for i in openFile:
        i = i.strip()
        linelist.append(i)
        b = i.lower()
        thislist = b.split()
        for a in thislist:
            if a in stopwords:
                continue
            else:
                wordlist.append(a)
    #print wordlist




#this dictionary is used to count the number of times each stop 
countdict = {}
def countWords(this_list):
    for word in this_list:
        depunct = word.strip(punctuation)
    if depunct in countdict:
        countdict[depunct] += 1
    else:
        countdict[depunct] = 1

Answer 1

from collections import defaultdict

target = 'itsy'
word_summary = defaultdict(list)
with open('itsy.txt', 'r') as f:
    lines = f.readlines()

for idx, line in enumerate(lines):
    words = [w.strip().lower() for w in line.split()]
    for word in words:
        word_summary[word].append(idx)

unique_words = len(word_summary.keys()) 
target_occurence = len(word_summary[target]) 
line_nums = set(word_summary[target])

print "There are %s unique words." % unique_words 
print "There are %s occurences of '%s'" % (target_occurence, target) 
print "'%s' is found on lines %s" % (target, ', '.join([str(i+1) for i in line_nums]))

Answer 2

如果逐行解析输入文本文件，则可以维护另一个字典，即word ->列表映射。对于一行中的每个单词，您都添加了一个条目。看起来可能如下所示。记住，我对python不是很熟悉，所以我可能错过了一些语法快捷键。

例如

countdict = {}
linedict = {}
for line in text_file:
    for word in line:
         depunct = word.strip(punctuation)
         if depunct in countdict:
             countdict[depunct] += 1
         else:
             countdict[depunct] = 1

         # add entry for word in the line dict if not there already
         if depunct not in linedict:
             linedict[depunct] = []

         # now add the word -> line entry
         linedict[depunct].append(line)

您可能需要做的一项修改是，如果一行中出现了两次单词，则避免将重复项添加到行中。

以上代码假设您只想读取文本文件一次。

Answer 3

openFile = open("test.txt", "r")

words = {}

for line in openFile.readlines():
  for word in line.strip().lower().split():
    wordDict = words.setdefault(word, { 'count': 0, 'line': set() })
    wordDict['count'] += 1
    wordDict['line'].add(line)

openFile.close()

print words