Downloading image with PIL and requests
<p>I am trying to download an original image (png format) by url, convert it on the fly (without saving to disc) and save as jpg. </p>

<p>The code is following:</p>

<pre><code>import os
import io
import requests
from PIL import Image
...
r = requests.get(img_url, stream=True)
if r.status_code == 200:
    i = Image.open(io.BytesIO(r.content))
    i.save(os.path.join(out_dir, 'image.jpg'), quality=85)
</code></pre>

<p>It works, but when I try to monitor the download progress (for the future progress bar) with r.iter_content() like this:</p>

<pre><code>r = requests.get(img_url, stream=True)
if r.status_code == 200:
    for chunk in r.iter_content():
        print(len(chunk))
    i = Image.open(io.BytesIO(r.content))
    i.save(os.path.join(out_dir, 'image.jpg'), quality=85)
</code></pre>

<p>I get this error:</p>

<pre><code>Traceback (most recent call last):
  File "E:/GitHub/geoportal/quicklookScrape/temp.py", line 37, in &lt;module&gt;
    i = Image.open(io.BytesIO(r.content))
  File "C:\Python35\lib\site-packages\requests\models.py", line 736, in content
    'The content for this response was already consumed')
RuntimeError: The content for this response was already consumed
</code></pre>

<p>So is it possible to monitor the download progress and after get the data itself?</p>