Add support for OrderedDict to PyYAML to avoid the "RepresenterError: cannot represent an object: OrderedDict" error

add_support_for_OrderedDict_in_PyYAML.py

from collections import OrderedDict
import sys
import yaml

test1 = {
  'beta': 1,
  'alpha': 2,
  'charlie': 3}
print(yaml.safe_dump(test1, default_flow_style=False))

# Enable PyYAML support for OrderedDict
yaml.add_representer(
    OrderedDict,
    lambda dumper, data: dumper.represent_dict(
        getattr(data, "viewitems"
        if sys.version_info < (3,) else "items")()),
    Dumper=yaml.SafeDumper)

test2 = OrderedDict()
test2['beta'] = 1
test2['alpha'] = 2
test2['charlie'] = 3
print(yaml.safe_dump(test2, default_flow_style=False))