def upload_(self, file, location):
    filename = secure_filename(file.filename)

    #get extension file
    extension = os.path.splitext(filename)[1]

    filename = str(uuid.uuid4()) + extension

    path = os.path.join(current_app.config[location], filename)
    print file #<FileStorage: u'new.pdf' ('application/pdf')>
    print path #/home/app/static/docs/b567467a-0991-4ee6-9255-28f7257079f9.pdf
    print filename #b2c681f6-7ad1-4fd1-abbd-9cddd7972125.pdf

    file.save(path ,filename)

    return filename

file.save(path ,filename)
  File "/usr/local/lib/python2.7/dist-packages/werkzeug/datastructures.py", line 2706, in save
    copyfileobj(self.stream, dst, buffer_size)
  File "/usr/lib/python2.7/shutil.py", line 49, in copyfileobj
    buf = fsrc.read(length)
TypeError: integer argument expected, got 'str'