python实现文件和目录管理
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批量重命名文件

import os
for filename in os.listdir('.'):
  os.rename(filename, filename.replace('old', 'new'))

查找大文件

import os
  for root, dirs, files in os.walk('.'):
    for name in files:
      if os.path.getsize(os.path.join(root, name)) > 1024 * 1024:  # 大于1MB
        print(os.path.join(root, name))

创建目录结构

import os
os.makedirs('dir/subdir/subsubdir', exist_ok=True)

删除空目录

import os
for root, dirs, files in os.walk('.', topdown=False):
    for name in dirs:
      dir_path = os.path.join(root, name)
      if not os.listdir(dir_path):
        os.rmdir(dir_path)

复制文件

import shutil
shutil.copy('source.txt', 'destination.txt')

移动文件

import shutil
shutil.move('source.txt', 'destination.txt')

读取文件内容

with open('file.txt', 'r') as file:
  content = file.read()

写入文件内容

with open('file.txt', 'w') as file:
  file.write('Hello, World!')

追加文件内容

with open('file.txt', 'a') as file:
  file.write('\nAppend this line.')

检查文件是否存在

import os
if os.path.exists('file.txt'):
  print("File exists.")
else:
  print("File does not exist.")
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