try_pyYaml.py

import yaml

document = """
  a: 1
  b:
    - 0.5
    - one
    - True
  c:
    key: 3
    another key: [4, 'five']
  name: This is a rather long description
    that can span multiple lines
  description: |       # note the pipe
    A 'literal' text
    where line breaks are preserved
"""

doc = yaml.load(document)
doc['c']['another key']
print yaml.dump(doc)