Python实现轻松比较两个文件夹的多种方法

import os

def get_files_in_directory(directory):
    """获取指定目录中的所有文件名"""
    return set(os.listdir(directory))

def find_extra_files(dir1, dir2):
    """找出在 dir1 中但不在 dir2 中的文件"""
    files_dir1 = get_files_in_directory(dir1)
    files_dir2 = get_files_in_directory(dir2)

    extra_in_dir1 = files_dir1 - files_dir2
    extra_in_dir2 = files_dir2 - files_dir1

    return extra_in_dir1, extra_in_dir2

# 示例用法
dir1 = r'F:\datesate\datasetnii\date-png\tumor_image'  
dir2 = r'F:\datesate\datasetnii\date-png\tumor_lable'  

extra_in_dir1, extra_in_dir2 = find_extra_files(dir1, dir2)

print(f"在 {dir1} 中多出的文件: {extra_in_dir1}")
print(f"在 {dir2} 中多出的文件: {extra_in_dir2}")

import os

def get_files_in_directory(directory):
    """获取指定目录中的所有文件名"""
    return set(os.listdir(directory))

def find_extra_files(dir1, dir2):
    """找出在 dir1 中但不在 dir2 中的文件"""
    files_dir1 = get_files_in_directory(dir1)
    files_dir2 = get_files_in_directory(dir2)

    extra_in_dir1 = files_dir1 - files_dir2
    extra_in_dir2 = files_dir2 - files_dir1

    return extra_in_dir1, extra_in_dir2

# 示例用法
dir1 = r'F:\datesate\datasetnii\date-png\tumor_image'  # 替换为第一个文件夹的路径
dir2 = r'F:\datesate\datasetnii\date-png\tumor_lable'  # 替换为第二个文件夹的路径

extra_in_dir1, extra_in_dir2 = find_extra_files(dir1, dir2)

print(f"在 {dir1} 中多出的文件: {extra_in_dir1}")
print(f"在 {dir2} 中多出的文件: {extra_in_dir2}")

def compare_files_line_by_line(file1, file2):
    with open(file1, 'r') as f1, open(file2, 'r') as f2:
        for line1, line2 in zip(f1, f2):
            if line1 != line2:
                return False
            return True

import hashlib
def get_file_hash(file_path):
    hash_md5 = hashlib.md5()
    with open(file_path, 'rb') as f:
        for chunk in iter(lambda: f.read(4096), b""):
            hash_md5.update(chunk)
    return hash_md5.hexdigest()
def compare_files_by_hash(file1, file2):
    return get_file_hash(file1) == get_file_hash(file2)

import os
def compare_files_by_size(file1, file2):
    return os.path.getsize(file1) == os.path.getsize(file2)

import filecmp
def compare_files_with_filecmp(file1, file2):
​​​​​​​return filecmp.cmp(file1, file2, shallow=False)

import difflib

def compare_files_with_difflib(file1, file2):
    with open(file1, 'r') as f1, open(file2, 'r') as f2:
        diff = difflib.unified_diff(f1.readlines(), f2.readlines())
        
        return list(diff)