import base64, hashlib
hash = hashlib.md5()
hash.update("0123456789")
base64.b64encode(hash.digest())

import hashlib, base64
 
def content_encoding(path: str):
  """
  文件转 bytes 加密并使用 base64 编码
  :param path: 文件路径
  :return: 返回加密编码后的字符串
  """
  with open(path, 'rb') as f:
    content = f.read()
  content_md5 = hashlib.md5()
  content_md5.update(content)
  content_base64 = base64.b64encode(content_md5.digest())
  return content_base64.decode("utf-8")

import hashlib, base64
 
def match(file_path, Bytes=1024):
  """
  先计算文件md5值，在对该md5值进行base64编码
  :param file_path: 文件路径
  :param Bytes: 字节大小
  :return:
  """
  try:
    md5_1 = hashlib.md5() # 创建一个md5算法对象
    with open(file_path, 'rb') as f: # 打开一个文件，必须是'rb'模式打开
      while 1:
        data = f.read(Bytes) # 由于是一个文件，每次只读取固定字节
        if data: # 当读取内容不为空时对读取内容进行update
          md5_1.update(data)
        else: # 当整个文件读完之后停止update
          break
    f.close()
    ret = base64.b64encode(bytes(md5_1.digest())) # 获取这个文件的MD5值
    ret = ret.decode('ascii') # 去掉前面的b'
    return ret
  except Exception as e:
    print(e)
    return ''

#!/usr/bin/env python
# -*- coding:utf-8 -*-
import os
import re
import time
 
def modify_md_content(top):
  for root, dirs, files in os.walk(top, topdown=False):
    # 循环文件
    for file_name in files:
      file_name_split = file_name.split('.')
 
      try:
        if file_name_split[-1] == 'md':
          # 找到md文件并且复制一份md文件路径
          md_file_path = os.path.join(root, '.'.join(file_name_split))
          copy_md_file_path = os.path.join(root, '.'.join([f'{file_name_split[0]}_copy', file_name_split[1]]))
 
          # 打开md文件然后进行替换
          with open(md_file_path, 'r', encoding='utf8') as fr,               open(copy_md_file_path, 'w', encoding='utf8') as fw:
            data = fr.read()
            # data = re.sub('\(/配图/', '(配图/', data)
            # data = re.sub('<br>', '<br>\n', data)
            # data = re.sub('<br>', '', data)
            data = re.sub('^ #.*? ', '', data)
 
            fw.write(data) # 新文件一次性写入原文件内容
            # fw.flush()
 
          # 删除原文件
          os.remove(md_file_path)
          # 重命名新文件名为原文件名
          os.rename(copy_md_file_path, md_file_path)
          print(f'{md_file_path} done...')
          time.sleep(0.5)
      except FileNotFoundError as e:
        print(e)
    time.sleep(0.5)
 
 
if __name__ == '__main__':
  top = r'/Users/mac/Desktop/'
  modify_md_content(top)