CODEWITHSUNDEEP
pythonjsonpython-2.7list-comprehension
shwetha
shwetha

Reputation: 376

List Comprehension to JSON in python

I have a python list of objects which looks like so

[
<NodeImage: id=aki-00501552, name=ubuntu/kernels-testing/ubuntu-lucid-amd64-linux-image-2.6.32-341-ec2-v-2.6.32-341.42-kernel, driver=Amazon EC2 (ap-southeast-1)  ...>, 
<NodeImage: id=aki-00c4bd52, name=ubuntu-kernels/ubuntu-lucid-amd64-linux-image-2.6.32-316-ec2-v-2.6.32-316.31-kernel, driver=Amazon EC2 (ap-southeast-1)  ...>, 
<NodeImage: id=aki-015d1253, name=RH-pv-grub-hd00-V1.01-x86_64, driver=Amazon EC2 (ap-southeast-1)  ...>, <NodeImage: id=aki-01f58a53, name=None, driver=Amazon EC2 (ap-southeast-1)  ...>
]

I want to convert this to JSON format which will look like so,

[
 {
   "id":"aki-00501552", "name":"ubuntu/kernels-testing/ubuntu-lucid-amd64-linux-image-2.6.32-341-ec2-v-2.6.32-341.42-kernel","driver":"Amazon EC2 (ap-southeast-1)"
 },
 {
   "id":"aki-00c4bd52", "name":"ubuntu-kernels/ubuntu-lucid-amd64-linux-image-2.6.32-316-ec2-v-2.6.32-316.31-kernel", "driver":"Amazon EC2 (ap-southeast-1)"
 },
 {
   "id":"aki-015d1253", "name":"RH-pv-grub-hd00-V1.01-x86_64", "driver":"Amazon EC2 (ap-southeast-1)"
 }
]

Is there a way to do this conversion.

Upvotes: 0

Views: 1249

Answers (1)

6502
6502

Reputation: 114481

If the data is just an array of objects containing strings/numbers and other json-compatible values you can just use:

s = json.dumps([x.__dict__ for x in data])

In Python x.__dict__ is a dictionary that contains all data members of object x.

Upvotes: 1

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