Python新手求助：实现批量替换文本缩略语并导出至指定目录

Hey there! Let's get your Python script working smoothly for replacing contractions in all .txt files under ./test and saving the processed files to a new directory. Here's a polished, working version of your code with clear explanations:

import os
import contractions

# Define input and output directories (adjust these paths if needed)
input_dir = "./test"
output_dir = "./processed_files"

# Create the output directory if it doesn't already exist
os.makedirs(output_dir, exist_ok=True)

# Get full paths to all .txt files in the input directory
txt_files = [
    os.path.join(input_dir, filename) 
    for filename in os.listdir(input_dir) 
    if filename.endswith('.txt')
]

# Process each file one by one
for file_path in txt_files:
    # Extract just the filename to use for the output file
    filename = os.path.basename(file_path)
    output_file_path = os.path.join(output_dir, filename)
    
    # Read the content of the original file
    with open(file_path, 'r', encoding='utf-8') as input_file:
        original_content = input_file.read()
    
    # Replace contractions using the contractions library
    processed_content = contractions.fix(original_content)
    
    # Write the cleaned content to the output file
    with open(output_file_path, 'w', encoding='utf-8') as output_file:
        output_file.write(processed_content)

print(f"Done! Processed {len(txt_files)} files. Results saved to {output_dir}")

Key Fixes & Explanations: #

• Full File Paths: Used os.path.join() to create complete paths for input files—your original code tried to open filenames without their directory path, which would cause errors.
• Output Directory Setup: Added os.makedirs(output_dir, exist_ok=True) to automatically create the output folder if it doesn't exist (no more "directory not found" crashes).
• Loop Through Files: Added a for loop to handle each .txt file individually—your initial code tried to open a list of files directly, which isn't valid.
• Safe File Handling: Used with open(...) context managers for reading/writing files—this ensures files are properly closed after operations, even if an error occurs.
• Encoding Support: Specified encoding='utf-8' to avoid garbled text when dealing with special characters in files.
• Contraction Replacement: Used contractions.fix()—the standard method from the library to replace common contractions like "don't" → "do not" or "I'm" → "I am".

Quick Note: #

If you haven't installed the contractions library yet, run this command in your terminal first:

pip install contractions

内容的提问来源于stack exchange，提问作者Rowland