Iterating through directory error: FileNotFoundError: [Errno 2] No such file or directory

Question

我编写了一个脚本来遍历目录中的多个文本文件，并计算每个文件中包含的单词也包含在字典文件中。我用目录中的两个文件编写并测试了脚本，并使其完美运行，脚本吐出两个准确的整数，每个文件一个。但是，一旦我将新文件添加到目录中，就会出现 FileNotFound 错误。文件肯定在里面！谁能告诉我导致此问题的代码是什么？我在 Whosebug 上浏览过各种其他此类帖子，但都没有成功。新添加的文件具有与现有两个相同的所有属性。

代码(word_count_from_dictionary-iterating.py):

import os
import sys
import nltk
nltk.download()
from nltk import word_tokenize
from nltk.corpus import stopwords
from nltk.stem import WordNetLemmatizer
import io

files_path = sys.argv[1]
textfile_dictionary = sys.argv[2]

for filename in os.listdir(files_path):
    if filename.endswith(".txt"):

        #accessing file for processing
        file = open(filename, "rt")
        text = file.read()

        #tokenize text file
        tokens = word_tokenize(text)

        #remove non-alphabetical characters
        words = []

        for word in tokens:
            if word.isalpha():
                words.append(word)

        #remove stopwords
        stop_words = stopwords.words("english")
        words_without_stops = []

        for w in words:
            if not w in stop_words:
                words_without_stops.append(w)
                

        #lemmatize remaining tokens and print
        lemmatizer = WordNetLemmatizer()
        lemmas = []
        for x in words_without_stops:
            lemmatizer.lemmatize(x)
            lemmas.append(x)

        #turn dictionary held in text file into a list of tokens
        file = io.open(textfile_dictionary, mode="r", encoding="utf8")
        dictionaryread = file.read()
        dictionary = dictionaryread.split()

        #count instances of each word in dictionary in the novel and add them up
        word_count = 0

        for element in dictionary:
            for lemma in lemmas:
                if lemma == element:
                    word_count = word_count + 1

        print(word_count)

目录中只有两个测试文件的命令行结果：

c@Computer:~/Dropbox/programming/first_project$ python3 word_count_from_dictionary_iterating.py directoryaddress dictionary.txt
showing info https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/index.xml
241
229

将新文件 (newfile.txt) 添加到目录后的结果：

c@Computer:~/Dropbox/programming/first_project$ python3 word_count_from_dictionary_iterating.py directoryaddress happy_words.txt
showing info https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/index.xml
241
229
Traceback (most recent call last):
  File "word_count_from_dictionary_iterating.py", line 17, in <module>
    file = open(filename, "rt")
FileNotFoundError: [Errno 2] No such file or directory: 'newfile.txt'

如果我运行 ls 在目录上，文件就会出现。如果我将未经迭代循环调整的脚本应用到 newfile.txt，它就可以工作。但它只是在目录中循环时不起作用。

感谢任何帮助，我是编程新手。

Answer 1

问题是当您运行 file = open(filename, "rt") 时，它正在您开始 Python (~/Dropbox/programming/first_project/) 的目录中查找文件名，但您希望它阅读 ~/Dropbox/programming/first_project/directoryaddress.

为确保您读取正确的文件，您应该将它的完整路径作为 filename 传递，或者，如果您知道您总是会在某个子目录中找到它，只需在文件名之前添加路径尝试阅读它 file = open(files_path+"/"+filename, "rt")（有更简洁的方法来组合路径，例如标准库 pathlib）。

Iterating through directory error: FileNotFoundError: [Errno 2] No such file or directory

Iterating through directory error: FileNotFoundError: [Errno 2] No such file or directory

file-not-found

python-3.x