assets/resized_google_logo.jpg

This sample demonstrates how to use SciPy to resize an image on App Engine Flexible.

runtime: python

vm: true

entrypoint: gunicorn -b :$PORT main:app

runtime_config:

python_version: 3

import logging

import os

from flask import Flask

import scipy.misc

app = Flask(__name__)

def resize():

"""Demonstrates using scipy to resize an image."""

app_path = os.path.dirname(os.path.realpath(__file__))

image_path = os.path.join(app_path, 'assets/google_logo.jpg')

img = scipy.misc.imread(image_path)

img_tinted = scipy.misc.imresize(img, (300, 300))

output_image_path = os.path.join(

app_path, 'assets/resized_google_logo.jpg')

# Write the tinted image back to disk

scipy.misc.imsave(output_image_path, img_tinted)

return "Image resized."

def server_error(e):

logging.exception('An error occurred during a request.')

return """

""".format(e), 500

if __name__ == '__main__':

# This is used when running locally. Gunicorn is used to run the

# application on Google App Engine. See entrypoint in app.yaml.

app.run(host='127.0.0.1', port=8080, debug=True)

import filecmp

import os

import main

def test_index():

main.app.testing = True

client = main.app.test_client()

test_path = os.path.dirname(os.path.realpath(__file__))

asset_path = os.path.join(

test_path, 'assets/resized_google_logo.jpg')

fixtured_path = os.path.join(

test_path, 'fixtures/assets/resized_google_logo.jpg')

try:

os.remove(asset_path)

except OSError:

pass # if doesn't exist

r = client.get('/')

assert filecmp.cmp(asset_path, fixtured_path)

assert r.status_code == 200