Btukfyl

I set up a .yaml file that contains meta data for my measurement points. In this .yaml file I used nested lists and dictionaries that contain the informations, e.g.:

stations:

  - XXXX:

      statnr: 11111

      name: NAME

      name_csv: CSV

      name_snowpack: NAME_SHORT

      lat: 11.11111

      lon: 11.22222

      alt: 1111

      type: TYPE

      operator: OPERATOR

      param: 

        - x1

        - x2

        - x3

        - x4

        - x5

  - YYYY:

      statnr: 22222

      name: NAME2

      name_csv: CSV2

      name_snowpack: NAME_SHORT2

      lat: 22.22222

      lon: 22.33333

      alt: 2222

      type: TYPE2

      operator: OPERATOR2

      param: 

        - y1

        - y2

        - y3

        - y4

        - y5

Next I tried to read specific entries from that file.

import yaml

with open('./config/stations.yaml','r') as file:

    meta = yaml.load(file)

    stations = meta['stations'] 

    print(stations[0])

This works and prints out all information about list entry 'XXXX' but if I want to only retrieve the information about the operator like I would do with a python dictionary:

print(stations[0]['operator'])

I get a: KeyError:'operator'.

So how can I address this entry or maybe entries even one level below that?
Thanks for helping!

Found the answer to the question myself. Obviously didn't try that thoroughly enough before..

Instead of having a list of stations in my stations.yaml like above:

stations: 

  - XXXX:

     statnr:1111

     ....

  - YYYY:

     statnr:2222

     ....

I use another dictionary:

stations: 

  XXXX:

    statnr:1111

    param:

      -x1

      -x2

    ....

  YYYY:

    statnr:2222

    param:

      -x1

      -x2

    ....

In this way I can use:

import yaml



with open('./config/stations.yaml','r') as file:

    meta = yaml.load(file)

    stations = meta['stations'] 

    txt = stations['XXXX']['param'][0]   

    print(txt) 

and get the result

x1

which is exactly what I was looking for.