👀 Views: 48 💬 Answers: 1 📅 Created: 2025-06-16

YAML PyYAML parsing configuration Python

I'm working on a personal project and I'm stuck on something that should probably be simple... I'm currently working on a configuration file written in YAML that contains deeply nested structures. The YAML file looks something like this: ```yaml settings: database: host: localhost port: 5432 credentials: username: user123 password: pass123 features: enable_feature_x: true feature_y: - item1 - item2 - item3 nested_feature: settings: timeout: 30 retries: 5 ``` I'm using PyYAML version 5.4.1 to parse this YAML file, but I'm running into issues when I try to access the nested values. My current approach is: ```python import yaml with open('config.yaml', 'r') as file: config = yaml.safe_load(file) print(config['settings']['database']['host']) # Should print 'localhost' print(config['settings']['features']['nested_feature']['settings']['timeout']) # Should print 30 ``` When I run this code, I get a `KeyError` for `nested_feature`, indicating that it's not being parsed as I expected. I suspect that the scenario lies in how the YAML structure is defined, but I need to pinpoint what's going wrong. I've also tried using `yaml.load` instead of `yaml.safe_load`, but that didn't change the outcome. I verified that the YAML file is indeed well-formed using an online validator. I also attempted to simplify the structure to isolate the question, but the behavior continues. Is there a specific way I should be handling nested structures in PyYAML to avoid these `KeyError` issues? Any guidance would be appreciated! This is part of a larger API I'm building. For context: I'm using Python on Ubuntu. Any ideas what could be causing this? What am I doing wrong?