python iterate yaml with lookup

Question

I have this sample yaml,

data:
  - name: data1
    sourceType: aws
    sourceSpecifier: acme/data123.zip
  - name: data2
    sourceType: aws
    sourceSpecifier: acme/data234.zip
  - name: data3
    sourceType: webdav
    sourceSpecifier: acme/data334.zip
sources:
  - type: aws
    baseUrl: example.s3.us-east-2.amazonaws.com
  - type: webdav
    baseUrl: https://internal-acme.example.com/

Please help to share the python script that will give an output:

• if data1, source url will be example.s3.us-east-2.amazonaws.com/acme/data123.zip
• if data3, source url will be https://internal-acme.example.com/acme/data334.zip

Answer 1

If your file is called "homework1.yaml" , then load the data using

import yaml

data = yaml.safe_loads("homework1.yaml")

data should be a dict containing the keys "data" and "sources" . Of these, data["data"] is a list containing three dictionaries, and data["sources"] is a list containing two dictionaries. All you have to do left is to match elements. Since you haven't specified in which type of data structure to save the match, that's all we can do for you.