Chapter 8 image does not open  #4

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1. rehanhaider commented on Oct 29, 2021

   

   rehanhaider

   on Oct 29, 2021

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   @AlexAdamov Thank you for raising this.

   Can you share a copy of your Jupyter notebook or the code that you are using please?
2. rehanhaider

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3. rehanhaider

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4. rehanhaider commented on Oct 29, 2021

   

   rehanhaider

   on Oct 29, 2021

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   @AlexAdamov
   This looks like an error, you need to change the comma (,) to a period (.) and try again

   image.save("response,jpg", "JPEG")
   

   This should solve the problem

   image.save("response.jpg", "JPEG")
   

   Can you try this and let me know if it solves your problem please?
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6. ysqander commented on Oct 30, 2021

   

   ysqander

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   Hi thanks for the quick reply.

   The error happens one step before the typo at

   image = Image.open(io.BytesIO(response.content)).

   
7. rehanhaider commented on Oct 30, 2021

   

   rehanhaider

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   OK. What is happening is your response.content is empty and thus raising an error. It is empty because response was the defined earlier in the notebook (beginning of Section 8.5) and your commands seem to be standalone.

   These commands needs to be run in the same notebook as where the previous commands were. In the comments notice it says In[4] which means it's the fourth cell in a series of commands.

   Alternatively, what you can do is add the following snippet to your 4 lines above and rerun

   import requests
   file = {"image": open("sample.jpg","rb")} 
   headers = {"type": "multipart/image"} 
   
   URL = "http://127.0.0.1:5000" 
   filter = "contour" 
   
   response = requests.post(f"{URL}/{filter}",headers=headers, files=file) 
   response.raise_for_status
   
   from PIL import Image 
   import io 
   
   image = Image.open(io.BytesIO(response.content)) 
   image.save("response.jpg","JPEG") 
   
   image
   

   Let me know if this works
8. ysqander commented on Oct 30, 2021

   

   ysqander

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   The last alternative - all in one cell worked :-)

   It's strange because I ran the same commands in 4 separate cells (but in the same notebook) and for some reason it didn't identify the io.BytesIO object in the fourth cell.

   Thanks for helping out. You book has been very useful!
9. ysqander

   closed this as completedon Oct 30, 2021
10. rehanhaider commented on Oct 30, 2021

    

    rehanhaider

    on Oct 30, 2021

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    The last alternative - all in one cell worked :-)

    It's strange because I ran the same commands in 4 separate cells (but in the same notebook) and for some reason it didn't identify the io.BytesIO object in the fourth cell.

    Just for your knowledge, this could would have happened because you may have shutdown the notebook / VSCode. The cell execution results do not persist across restarts.

    Thanks for helping out. You book has been very useful!

    🙂 Always encouraging to head good things, if possible please leave a review so it gets more exposures.
11. CloudBytes-Academy

    locked and limited conversation to collaborators on Oct 30, 2021