简单的复制程序

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import os,sys,time   file_name='Python之旅：面向对象' # pwd=r'E:\hexo\source\_posts\Python\爬虫\\' pwd=r'E:\hexo\source\_posts\Python\Python之旅\\'   update = True with open(pwd+r'{}.md'.format(file_name),'r',encoding='utf-8',) as file1 ,\         open(pwd+r'{}.md.swap'.format(file_name),'w',encoding='utf8') as file2:     for line in file1:           if line.strip().startswith('**') and line.strip().endswith('**'):             line='## '+line.replace('**',' ')         if line.strip().startswith('\\'):             line=line.replace('\\',' ')         if line.strip().startswith(':             line=line.replace(line,' ')         if line.strip().startswith('###'):             line=line.replace('###','##')           if line.strip().startswith('![img]'):             print(line)             img_name=line.strip().split('\\')[7].split(')')[0]             a='{'             b='}'             line=line.replace(line,"{}% asset_img {} img %{}".format(a,img_name,b))         if line.strip().startswith('[![复制代码]'):             line=line.replace(line,'')         if line.strip().lower().find('egon'):             line=line.replace('egon','allen')         # 给代码设定语言，如有其它if请在上面修改否则会continue         if line.strip()=='```python' or line.strip()=='```shell':             update=False         elif line.strip()=='```' and not update:             update=True             file2.write(line)             continue         if line.strip()=='```' and update:             line=line.replace('```','```python')             update = False             file2.write(line) os.remove(pwd+r'{}.md'.format(file_name)) os.rename(pwd+r'{}.md.swap'.format(file_name),pwd+r'{}.md'.format(file_name))<br><br><br>