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ruyaml_yaml_load_modify_dump_with_comment_preservation.py
pythonA basic example demonstrating how to load a YAML string, modify a value while pre
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ruyaml_yaml_load_modify_dump_with_comment_preservation.py
1import sys
2from ruyaml import YAML
3
4yaml_str = """\
5# Example YAML document
6name: ruyaml
7features:
8 - fast
9 - round-trip # preserves comments
10"""
11
12# Initialize YAML object
13yaml = YAML()
14
15# Load the YAML string into a Python object (CommentedMap)
16data = yaml.load(yaml_str)
17
18# Modify the data
19data['name'] = 'ruyaml-modified'
20data['features'].append('reliable')
21
22# Dump the modified data back to a string/stream (preserves formatting and comments)
23yaml.dump(data, sys.stdout)