environment_variables:
  env1: 2
  env2: spawn
  env3:
  - 1
  - 2
  - 3
  - 4
  - 5
  env4:
    a: 1
    b: "2"
inputs:
  key:
    type: string
outputs:
  output:
    type: string
    reference: ${print_env.output.value}
nodes:
- name: print_env
  type: python
  source:
    type: code
    path: print_env.py
  inputs:
    key: ${inputs.key}
