old_contents: #coding=utf-8 
  import hashlib
  import json
  import os
  import logging
  from flask import Flask, request, send_file, redirect
  from logging.handlers import RotatingFileHandler
  from storitch import folder_store
  from storitch.image import Image
  
  app = Flask(__name__)
  app.config.update({
      'STORE_PATH': None,
      'STORE_ENGINE': folder_store.Folder_store,
      'ENABLE_THUMBNAIL': True,
      'LOG_PATH': None,
  })
  
  app.config.from_envvar('STORITCH_CONFIG', silent=True)
  
  if app.config['LOG_PATH']:
      handler = RotatingFileHandler(app.config['LOG_PATH'], maxBytes=10000, backupCount=1)
      handler.setLevel(logging.INFO)
      app.logger.addHandler(handler)
  
  def sha256_stream(stream):
      h = hashlib.sha256()
      done = False
      while not done:
          chunk = stream.read(16384)
          if chunk:
              h.update(chunk)
          else:
              done = True
      return h.hexdigest()
  
  @app.route('/upload', methods=['POST'])
  @app.route('/store', methods=['POST'])
  def store_files():
      stored_files = []
      for files in request.files:
          for file_ in request.files.getlist(files):
              hash_ = sha256_stream(file_.stream)
              file_.stream.seek(0)
              stored = app.config['STORE_ENGINE'].store(
                  path=app.config['STORE_PATH'],
                  stream=file_.stream,
                  hash_=hash_,
              )
              stored_files.append({
                  'hash': hash_,
                  'stored': stored,
              })
  
      return json.dumps(stored_files)
  
  @app.route('/<hash_>', methods=['GET'])
  def get_file(hash_):
      path = app.config['STORE_ENGINE'].get(
          path=app.config['STORE_PATH'],
          hash_=hash_
      )
      if os.path.exists(path):
          if app.debug:
              return send_file(path)
      else:
          if Image.thumbnail(path):
              if app.debug:
                  return send_file(path)
              return redirect('/{}'.format(hash_))
      return 'Not found', 404
  
  if __name__ == '__main__':
      app.run()
  
  
new_contents: #coding=utf-8 
  import hashlib
  import json
  import os
  import logging
  from flask import Flask, request, send_file, redirect
  from logging.handlers import RotatingFileHandler
  from storitch import folder_store
  from storitch.image import Image
  
  app = Flask(__name__)
  app.config.update({
      'STORE_PATH': None,
      'STORE_ENGINE': folder_store.Folder_store,
      'ENABLE_THUMBNAIL': True,
      'LOG_PATH': None,
  })
  
  app.config.from_envvar('STORITCH_CONFIG', silent=True)
  
  if app.config['LOG_PATH']:
      handler = RotatingFileHandler(app.config['LOG_PATH'], maxBytes=10000, backupCount=1)
      handler.setLevel(logging.INFO)
      app.logger.addHandler(handler)
  
  def sha256_stream(stream):
      h = hashlib.sha256()
      done = False
      while not done:
          chunk = stream.read(16384)
          if chunk:
              h.update(chunk)
          else:
              done = True
      return h.hexdigest()
  
  @app.route('/upload', methods=['POST'])
  @app.route('/store', methods=['POST'])
  def store_files():
      stored_files = []
      for files in request.files:
          for file_ in request.files.getlist(files):
              hash_ = sha256_stream(file_.stream)
              file_.stream.seek(0)
              stored = app.config['STORE_ENGINE'].store(
                  path=app.config['STORE_PATH'],
                  stream=file_.stream,
                  hash_=hash_,
              )
              stored_files.append({
                  'hash': hash_,
                  'stored': stored,
              })
  
      return json.dumps(stored_files)
  
  @app.route('/<hash_>', methods=['GET'])
  def get_file(hash_):
      path = app.config['STORE_ENGINE'].get(
          path=app.config['STORE_PATH'],
          hash_=hash_
      )
      if os.path.exists(path):
          #if app.debug:
          return send_file(path)
      else:
          if Image.thumbnail(path):
              #if app.debug:
              return send_file(path)
              #return redirect('/{}'.format(hash_))
      return 'Not found', 404
  
  if __name__ == '__main__':
      app.run()
  
  
subject: Send file instead of redirect.