统计多个.txt文件词频：实现单词及出现次数展示（附代码）

Hey there! I notice your current code calculates the total number of times each word appears across all your .txt files, but your goal is to show how many times each word shows up in individual files. Let's tweak the code to make that happen.

The Issue with Your Current Code #

Your dictionary d only stores a single total count per word, which doesn't distinguish which file the word came from. We need to adjust the data structure to track counts per file.

Modified Code #

listtxt = ['a.txt','b.txt','c.txt']  # Add your full list of files here
output = open('dictionary.txt','w') 

# Use a nested dictionary: key = word, value = {filename: count}
word_counts = {} 

for filename in listtxt: 
    with open(filename,'r') as file: 
        data = file.read() 
        # Clean up punctuation and normalize to lowercase
        for char in '-.,;”“': 
            data = data.replace(char,' ') 
        data = data.lower() 
        word_list = data.split() 
        
        # Update counts for the current file
        for word in word_list:
            # Initialize the word's entry if it doesn't exist
            if word not in word_counts:
                word_counts[word] = {}
            # Increment count for this file (default to 0 if not present)
            word_counts[word][filename] = word_counts[word].get(filename, 0) + 1 

# Write the results to the output file
for word, file_counts in word_counts.items():
    output.write(f"Word: *{word}*\n")
    for file, count in file_counts.items():
        output.write(f"  - {file}: {count} times\n")
    output.write("\n")  # Add a blank line between words for readability

output.close()

Key Changes Explained #

• Nested Dictionary: word_counts uses a dictionary inside a dictionary to map each word to its counts across different files.
• Per-File Tracking: For each word, we now track how many times it appears in each file instead of just a total.
• Readable Output: The output file now clearly lists each word, followed by its occurrence count in every file it appears in.

Example Output in dictionary.txt #

Word: *hello*
  - a.txt: 3 times
  - b.txt: 1 time

Word: *world*
  - c.txt: 5 times

内容的提问来源于stack exchange，提问作者Martin Hoang