'base64' is not a text encoding; use codecs.decode() to handle arbitrary codecs

Its showing error LookupError: 'base64' is not a text encoding; use codecs.decode() to handle arbitrary codecs.

Last few lines when the execution stops are - thumbnail = resize(photo_data, 200, 200) File "/home/anurag/photoshare/app.py", line 406, in resize image_string = StringIO(img.decode('base64')) LookupError: 'base64' is not a text encoding; use codecs.decode() to handle arbitrary codecs

begin photo uploading code

photos uploaded using base64 encoding so they can be directly embeded in HTML

ALLOWED_EXTENSIONS = set(['png', 'jpg', 'jpeg', 'gif'])  def allowed_file(filename):``  return '.' in filename and filename.rsplit('.', 1)[1] in   ALLOWED_EXTENSIONS    @app.route('/upload', methods=['GET', 'POST'])  @flask_login.login_required  def upload_file():  if request.method == 'POST':      uid = getUserIdFromEmail(flask_login.current_user.id)      imgfile = request.files['photo']      caption = request.form.get('caption')      album_id = request.form.get('album')      tags = request.form.get('tags')      photo_data = base64.standard_b64encode(imgfile.read())      thumbnail = resize(photo_data, 200, 200)      cursor = conn.cursor()      cursor.execute("INSERT INTO Photos (imgdata, thumbnail, user_id,   caption, album_id) VALUES ('{0}', '{1}', '{2}', '{3}',   '{4}')".format(photo_data, thumbnail, uid, caption, album_id))      conn.commit()      picture_id = cursor.lastrowid      print (picture_id)      print (tags)      insert_tags(picture_id, tags)      return redirect( url_for('get_album', id=album_id))  #The method is GET so we return a  HTML form to upload the a photo.  else:      return render_template('upload.html', loggedin=True,   albums=get_all_album_data())

end photo uploading code

resizes if greater than (x,y) else returns original

def resize(img, x,y):  image_string = StringIO(img.decode('base64'))  with Image.open(image_string) as image:      if image.size[0] > 200 and image.size[1] > 200:          cover = resizeimage.resize_cover(image, [x,y])          buffer = StringIO()          cover.save(buffer, format="JPEG")          return base64.b64encode(buffer.getvalue())      else:          return img

Then there is another filefor image. from PIL import Image from io import StringIO from resizeimage import resizeimage import os, base64

 def resize(img, x,y):  image_string = StringIO(img.decode('base64'))  ``with Image.open(image_string) as image:      if image.size[0] > 200 and image.size[1] > 200:          cover = resizeimage.resize_cover(image, [x,y])          return base64.standard_b64encode(cover)      else:          return img``

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