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Yaml.add_constructor(u'tag:,2002:opencv-matrix', meta_constructor)ĭata_loaded = yaml.load(stream, Loader=yaml. You must specify a constructor for the OpenCV data type that you are trying to load, because it doesn't exist by default in PyYAML: import yaml This method parses and converts the YAML object to a Python dictionary so that we can read the content. This is first time I use yml files so I really don´t know what to do with it. import yaml def metaconstructor(loader, node): return nstructmapping(node) yaml.addconstructor(u'tag:,2002:opencv-matrix', metaconstructor) with open(filename, 'r') as stream: dataloaded yaml.load(stream, Loaderyaml. The yaml.load() method is used to read the YAML file. In "flow_field/u00000.yml", line 3, column 7

YAML allows you to define multiple documents in one file, separating them with a triple dash ( - ). I try parse it like this # Read YAML fileīut I am getting this error: : could not determine a constructor for the tag 'tag:,2002:opencv-matrix' Parsing files with multiple YAML documents. I try parse YAML file which look like this: %YAML 1.0ĭata: [ 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,Ġ., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., import yaml configfile yaml.safeload(open('config.yaml', 'rb')) projectnameconfigfile.get('projectname') Creating more complex Python config files This method can be of course expanded to use more complex YAML data structures and multiple Python files, further improving your code quality and speed of development.