file2basestr.py

import base64
import os
import sys

def file_to_basestr(file_path):
    with open(file_path, "rb") as f:
        return base64.b85encode(f.read())

if __name__ == "__main__":
    args = sys.argv
    path = input('Path> ') if len(args) == 1 else args[1]
    s = file_to_basestr(path)
    with open(os.path.join(os.path.dirname(path), 'data.txt'), mode='wb') as f:
        f.write(s)