python - 我做了一个程序来检查文件中是否有一个词，需要一些建议

Question

我想打印这个词是否出现，以及这个词在文件中出现了多少次。除了这个词在文件中出现 1 次或 0 次之外，我无法说出任何其他内容。

这个问题出现在第26行，print("It appears "+ str(wordcount[word]) + "times")

特别是 str(wordcount[word])。这可能是一个简单的问题，但这是我使用 Python 的第一周，所以如果有人有想法请分享。谢谢!

我试过放置 wordcount[word]、word_counter.__getitem__(wordcount[word]) 和 word_counter.__getitem__(wordcount)

import collections
file = open(r"C:\Users\Patrick Wu\Documents\1wordfreqtest.txt", "r")
if file.mode == "r":
    contents = file.read()
word = input("Word to check for :")
wordcount = {}
"""this below is to remove difference between upper and lower cases as 
well as punctuation""" 
for word in contents.lower().split():
    word = word.replace(".","")
    word = word.replace(",","")
    word = word.replace(":","")
    word = word.replace("\"","")
    word = word.replace("!","")
    word = word.replace("“","")
    word = word.replace("‘","")
    word = word.replace("*","")
    if word not in wordcount:
        wordcount[word] = 1
    else:
        wordcount[word] += 1

word_counter = collections.Counter(wordcount)
if word in str(contents):
    print("This word is in the file :)")
    print("It appears " + str(wordcount[word]) + " times")
else:
    print("This word isn't in the file")

Answer 1

变量 word 在局部范围内被循环覆盖。所以你输入的 word 被循环覆盖，你最终检查了输入文件最后一个单词的计数。将输入词更改为与您在文件中循环访问的词不同的变量名。