Python脚本--批量更改本地md文件的图片链接

#-*- coding:utf-8 -*-
import re
import os

def patch_md(filename):
    if filename.endswith('.md'):
        return True
    return False

def _patch_replace(text):
    pattern=re.compile(r'(?<=!)[.*]((.*)(?=))')
    result = re.findall(pattern,text)for filedir in result:
        if '\' in filedir:
            listfile = filedir.split('\')
        else:
            listfile = filedir.split('/')
        pattern_file = r'(?<=!)[.*](.*[\/]+(?='+listfile[-1]+r'))'
        pattern_repl=re.compile(pattern_file)
        result = re.findall(pattern_repl,text)
        print result
        replace_file=r'[](https://github.com/xxxxxx/img/'#换成图片所存储的位置
        text=re.sub(pattern_repl,replace_file,text)
    return text

def patch_replace(filename):
    print filename
    with open(filename,'r+') as f:
        text=f.read()
        text_file=_patch_replace(text)
    with open(filename,'w') as f:
        f.write(text_file)


def run():
    dirpath = raw_input("输入所要处理的文件的目录：")
    fileset = filter(patch_md,os.listdir(dirpath))
    print fileset
    for filename in fileset:
        absfile = os.path.join(dirpath,filename)
        patch_replace(absfile)

if __name__=='__main__':
    run()

批量更改本地的md文件中的图片链接。以适应github，使得在github中能够正常展现图片。