Python Basics

x = np.load('something.npz')
lst = x.files #to see the structure

In google colab, !unzip zipfile can be used to extract zip file

python json stores dic object(https://stackabuse.com/reading-and-writing-json-to-a-file-in-python/)
with open('data.txt', 'w') as outfile:
  json.dump(data, outfile)
with open('data.txt') as json_file:
  data = json.load(json_file)
json.dumps(data, indent=4)
$ echo '{"people":[{"name":"Scott", "website":"stackabuse.com", "from":"Nebraska"}]}' | python -m json.tool

from IPython.display import Image
Image('bp.png')

!rm test.json #delete file in colab

os.path.join('images/', '01.jpg') #output images/01.jpg
sorted(os.listdir(path))

import numpy as np
arr1 = np.arange(8).reshape(2, 4)
arr2 = np.arange(10).reshape(2, 5)
np.savez('mat.npz', name1=arr1, name2=arr2)
data = np.load('mat.npz')
print data['name1']
print data['name2']