Computing with Data

132.8K views

Open Source Your Knowledge, Become a Contributor

Technology knowledge has to be shared and made accessible for free. Join the movement.

Previous: Pickling Next: Java Object Serialization

Shelving

Shelves is a module that provides persistent dictionary objects whose values can be any Python object that can be pickled.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
import shelve
# Example 1 - store
patients_df = {
  "age" : [25.2, 35.4, 52.1],
  "height" : [68.1, 62.5, 60.5],
  "weight" : [170.2, 160.7, 185.5]
}
records = shelve.open('patients')
records['patients'] = patients_df 
records.close()
# Example 2 - load and manipulate
records = shelve.open('patients')
patients_reconstructed = records['patients']
del records['patients']  # delete value from disk
records.close()
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Open Source Your Knowledge: become a Contributor and help others learn. Create New Content

Open Source Your Knowledge, Become a Contributor

288/300 Shelving

Shelving

Tutoring

Recueil d'exercices pour apprendre Python au lycée

How to build a chatbot in less than 50 lines of code

Why Learn Python