CODEWITHSUNDEEP
pythonyaml
vacuous_rom_36457
vacuous_rom_36457

Reputation: 31

Way to delete yaml keys in the form "a.b.c.e"?

I have yaml keys in the form "a.b.c.d" but my yaml file is in the format:

a:
  b:
    c:
      e:"world"
    d: "hello"
  e:
    f:
      g: "sample"
      h: 1

I want to delete "a.b.c.e" here and I have around 300 rows of yaml keys in similar format any idea on how to delete the keys?

I know about the del function in ruamel.yaml if it will be possible integrate.

Like Lets say I delete "a.b.c.e"

the desired output:

a:
  b:
    c:
    d: "hello"
  e:
    f:
      g: "sample"
      h: 1

I know there is a problem with syntax. The actual yaml file has many more lines.

Upvotes: 0

Views: 317

Answers (1)

tturbo
tturbo

Reputation: 1166

Yes but after splitting it I will get a list ["a","b","c","e"] and the format for key deletion would be del d["a"]["b"]["c"]["e"] I do not know how to convert the list into that statement because not all the keys are of same length some are of form "a.b.c.d.e.f".That is the problem I am facing.

something like this?

keys = ["a","b","c","e"]
yaml_dict = { ... } # some nested dict

last_dict = yaml_dict 

# search node to delete
for key in keys[:-1]:
    last_dict = last_dict.get(key, None)
    if node is None:
        # key not found
        break

if last_dict is not None and keys[-1] is in last_dict:
    del last_dict[keys[-1]] # delete last key from last dict
    # TODO: delete whole dict if the key was the only key on this level

Upvotes: 1

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