Problem uploading image Django 1.9 Python 3.5

My problem is that when I try to save image to my model using Django shell I get this error that I can't find solution anywere.

models.py

class AdImage(models.Model):
   ad = models.ForeignKey(Ad)
   full_photo = models.ImageField(upload_to='uploads/', blank=True)

I import models create AdImage instance add 'ad' and try to

imagead.full_photo.save("NowHiring.jpg",open("C:\\NowHiring.jpg", "rb"))

but i get an error

Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "C:\Users\hp\Envs\platform\lib\site-packages\django\db\models\fields\file
s.py", line 106, in save
    self._size = content.size
AttributeError: '_io.BufferedReader' object has no attribute 'size'

Using: Python 3.5, Django 1.9

What could I do ?

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