Parse YAML with dots delimiter in keys Question: We use YAML configuration for services scaling. Usually it goes like this: service: scalingPolicy: capacity: min: 1 max: 1 So it’s easy to open with basic PyYAML and parse as an dict to get config[‘service’][‘scalingPolicy’][‘capacity’][‘min’] result as 1. Problem is that some configs are built with dots …
TypeError: load() missing 1 required positional argument: 'Loader' in Google Colab Question: I am trying to do a regular import in Google Colab. This import worked up until now. If I try: import plotly.express as px or import pingouin as pg I get an error: ————————————————————————— TypeError Traceback (most recent call last) <ipython-input-19-86e89bd44552> in <module>() …
ruamel.yaml: pin comment to next data item instead of previous one Question: hI observed a somewhat confusing behavior when using ruamel.yaml with roundtrip loader. It’s probably because it’s not trivial for ruamel.yaml to automatically determine to which data item a comment should be connected. In the below example, I would like to always keep the …
Indent items of YAML lists when dumping Question: The context Consider this minimal working example: I have this JSON file $ cat main.json [ { "name": "a", "numbers": [1, 2] }, { "name": "b", "numbers": [10, 20] } ] I need to convert that JSON file to YAML. The following script accomplishes that $ cat …
Array does not have indent or space in PyYAML Question: In the code below I created the net_plan_dict variable dictionary and converted it into a YAML format file. Inside the dictionary I have a field called addresses which is an array of three elements. After creating the YAML file, the three array elements were not …
Loading custom objects with PyYAML Question: I have the following YAML document: !!com.example.hero.YAMLAnimals animals: Land: [Cow, Lion] Sea: [Salmon, Cod] I expected to be able to load the animals object by subclassing YAMLObject. class YAMLAnimals(yaml.YAMLObject): yaml_tag = u’!com.example.hero.YAMLAnimals’ def __init__(self, animals): self.animals = animals However, when I load the document, I get a ConstructorError. ConstructorError: …
Is 'yes' really an alias for 'true' according to the YAML 1.1 spec? The 1.2 spec? Question: I’m trying to debug an issue, and it boils down to… >>> import yaml as pyyaml >>> import ruamel.yaml as ruamel >>> ruamel.load(“x: yes”) == ruamel.load(“x: true”) False >>> pyyaml.safe_load(“x: yes”) == pyyaml.safe_load(“x: true”) True There are rumors …
How to parse a YAML file with multiple documents? Question: Here is my parsing code: import yaml def yaml_as_python(val): “””Convert YAML to dict””” try: return yaml.load_all(val) except yaml.YAMLError as exc: return exc with open(‘circuits-small.yaml’,’r’) as input_file: results = yaml_as_python(input_file) print results for value in results: print value Here is a sample of the file: ingests: …
How to read a python tuple using PyYAML? Question: I have the following YAML file named input.yaml: cities: 1: [0,0] 2: [4,0] 3: [0,4] 4: [4,4] 5: [2,2] 6: [6,2] highways: – [1,2] – [1,3] – [1,5] – [2,4] – [3,4] – [5,4] start: 1 end: 4 I’m loading it using PyYAML and printing the …
yaml anchors definitions loading in PyYAML Question: I’m using PyYAML. Is there a way to define a YAML anchor in a way it won’t be a part of the data structure loaded by yaml.load (I can remove “wifi_parm” from the dictionary but looking for a smarter way)? example.yaml: wifi_parm: &wifi_params ssid: 1 key: 2 test1: …
