在目录中查找包含特定字母的文件

import os
import re

def find_files_with_letter(directory, letter):
    found_files = []
    pattern = re.compile(re.escape(letter))
    
    for root, dirs, files in os.walk(directory):
        for file in files:
            file_path = os.path.join(root, file)
            try:
                with open(file_path, 'r', encoding='utf-8') as f:
                    if pattern.search(f.read()):
                        found_files.append(file_path)
            except Exception as e:
                print(f"Error reading {file_path}: {e}")
    
    return found_files

# 示例用法
directory_path = '/path/to/search'
letter_to_find = 'a'
result = find_files_with_letter(directory_path, letter_to_find)
print(f"Files containing '{letter_to_find}': {result}")