Renaming files in many sub-folders. Requirement: There is a huge directory list which has many sub-directories and one file in each sub-directory, which has to be renamed as sub-directory name with the original extension. Last sub-directory name is always 8 chars. After renaming is done, it has to be moved to a different folder. Wrote a small Py…

RenameFileInSubFolder.py

import os

# Current working directory where files and folders are present.
rootDir = os.getcwd()

# Destination directory to copy files.
destinationDir = 'D:/GBR/'

# Walk thru the directories in this root directory.
for dirName, subdirList, fileList in os.walk(rootDir):
    # There will always be only one file in each sub-directory.
    # Last sub-directory is of 8 chars only.
    for fname in fileList:
        print fname
        # Rename the only file present in the last sub-directory [and retain the original extension] and move it to the desination directory.
        os.rename(dirName + "\\" + fname, destinationDir + dirName[-8:] + ".geo.json")