CODEWITHSUNDEEP
pythonflaskpython-imaging-library
user9572098
user9572098

Reputation:

PIL: ValueError: unknown resampling filter, How to resize images uploaded on Flask?

I'm making a web app using Flask, and I want to resize the images that are uploaded. I'm using PIL to do this, but an error is thrown.

The process to do it is like this, but it seems inefficient:

filename = secure_filename(form.image.data.filename)
form.image.data.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
img = Image.open(os.path.join(app.config['UPLOAD_FOLDER'],filename), 'r')
img = img.resize(300, 300)
img.save(filename, quality=100, optimize=True)

What I'm trying to do is save the image after the user uploaded it, open the new file, resize it, and save it again.

How can I fix my error?

Also is there a way to do this more efficiently (without saving the un-resized file), using a Python library?

Upvotes: 19

Views: 34880

Answers (2)

Maheep
Maheep

Reputation: 897

The most important thing to remember is not to pass the size as object but as a tuple in resize function new_image = image.resize((img_width,img_size))

and NOT AS

new_image = image.resize(img_width,img_size)

Upvotes: 7

Park
Park

Reputation: 749

img = img.resize(300, 300)

=> img = img.resize((300,300))

Upvotes: 74

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