python备忘：文件

1.获取当前路径，父路径，前两级路径
当前文件的路径

pwd = os.getcwd()

当前文件的父路径

father_path=os.path.abspath(os.path.dirname(pwd)+os.path.sep+".")

当前文件的前两级目录

grader_father=os.path.abspath(os.path.dirname(pwd)+os.path.sep+"..")

2.对含有某一关键字的文件重命名

pwd = os.getcwd()oldname = "old"newname = "new"for parent, dirnames, filenames in os.walk(pwd):for filename in filenames:     if filename.find(oldname) != -1:          newName = filename.replace(oldname, newname)          print(filename, "---->", newName)          os.rename(os.path.join(parent, filename), os.path.join(parent, newName))