我制作了一個程序來檢查文件中的單詞是否需要一些建議

Question

如果單詞出現，我想打印，以及單詞出現在文件中的次數。 除了這個單詞在文件中出現1或0次之外，我無法說出來。

This problem occurs on line 26, print("It appears " + str(wordcount[word]) + " times")

特別是str（wordcount [word]）。 這可能是一個簡單的問題，但這是我的第一周python，所以如果有人有想法請分享。 謝謝！

我試過把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

循環中，變量word在本地范圍內被覆蓋。 因此，循環會覆蓋您的輸入word ，最后會檢查輸入文件的最后一個字的計數。 將輸入詞更改為與您在文件中迭代的詞不同的變量名。

Answer 2

您可以使用此代碼：

import collections
file = open("wordfreqtest.txt", "r")
if file.mode == "r":
    contents = file.read().lower()
word = input("Word to check for :").lower()

times = 0

finish = 0

while finish==0:
    if word in contents:
        contents = contents[contents.find(word) + len(word):]
        times += 1
    else:
        break

if times > 0:
    print("This word is in the file :)")
    print("It appears " + str(times) + " times")
else:
    print("This word isn't in the file")

Answer 3

通過在輸入和for循環中使用相同的名稱“word”，您有一個范圍問題。

我建議做這樣的事情：

word = input("Word to check for :")
with open('your_file.txt') as f:
     raw = f.read()
     num_appearences = raw.count(word)
     print(f"The word {word} appears {num_appearences} times in the file")