title: Google App Engine write text string to blobstore without using deprecated API [Python]
body: <p>I have some pdf files uploaded to blobstore, i want to convert them to string and store them in blobstore as text files. I want to know how can i write a string (pdf converteed to text) into blobstore as a file. i know that  there is an API for it </p>
  
  <p><a href="https://developers.google.com/appengine/docs/python/blobstore/#Writing_Files_to_the_Blobstore" rel="nofollow">https://developers.google.com/appengine/docs/python/blobstore/#Writing_Files_to_the_Blobstore</a></p>
  
  <p>but it has been deprecated . So what could be the possible alternative to it ?</p>