Struggling to Parse Complex Nested YAML Structures in Python with PyYAML
I keep running into I'm attempting to set up I'm integrating two systems and I'm optimizing some code but Quick question that's been bugging me - I'm working on a project where I need to parse a complex YAML file that includes nested structures and lists... The file looks something like this: ```yaml version: 1.0 services: web: image: nginx:latest ports: - 80:80 db: image: postgres:13 environment: POSTGRES_USER: user POSTGRES_PASSWORD: password volumes: - db_data:/var/lib/postgresql/data volumes: db_data: ``` I am using the `pyyaml` library version 5.3.1 to parse this YAML file. My current attempt at parsing looks like this: ```python import yaml with open('docker-compose.yaml', 'r') as file: data = yaml.safe_load(file) print(data) ``` However, when I run this code, I encounter the following behavior: ``` 'NoneType' object is not subscriptable ``` This behavior occurs because I expected `data` to be a dictionary containing the keys from my YAML file, but it seems to be returning `None`. I’ve also tried using `yaml.load()` with the `Loader=yaml.FullLoader` option, but that didn’t resolve the scenario either. I’ve verified the YAML file syntax multiple times, and it appears correct, so I'm puzzled as to why this is happening. Has anyone else encountered similar issues when parsing nested YAML structures with `pyyaml`? What could I be doing wrong, or is there a specific configuration I need to ensure the YAML is parsed correctly? Any help would be appreciated! This is my first time working with Python 3.11. This is my first time working with Python 3.10. Has anyone else encountered this? This is part of a larger application I'm building. Thanks, I really appreciate it! My development environment is Debian. Thanks, I really appreciate it!