Select items in list where attribute does not match regex pattern

I have a list of dicts, something like:

[
  {
    "url": "bucket.amazonaws.com",
    "file": "file1.txt"
  },
  {
    "url": "github.com",
    "file": "file2.txt"
  }
]

I can filter the results to create a variable with files in AWS:

aws_files: "{{ array | selectattr('url', 'match', '.*amazonaws\\.com.*') }}"

Or files in Github:

github_files: "{{ array | selectattr('url', 'match', '.*github\\.com.*') }}"

How can I filter to find all files that don't match either of the above patterns?

This is what I have but I don't think it's right:

remaining_files: "{{ not (array | selectattr('url', 'match', '.*(amazonaws|github)\\.com.*')) }}"

This also doesn't work:

remaining_files: "{{ array | selectattr('url', 'notmatch', '.*(amazonaws|github)\\.com.*') }}"

Also, secondary question: is there a way to match the pattern anywhere in the string (so I don't have to always add .* to the beginning/end of the pattern).

Solution

For example, given the patterns in a list

  patterns:
    - .*amazonaws\.com.*
    - .*github\.com.*

and the array for testing

  array:
    - {file: file1.txt, url: bucket.amazonaws.com}
    - {file: file2.txt, url: github.com}
    - {file: file3.txt, url: example.com}

Select the aws and github files

  aws_files: "{{ array | selectattr('url', 'match', patterns.0) }}"
  github_files: "{{ array | selectattr('url', 'match', patterns.1) }}"

gives

  aws_files: [{'file': 'file1.txt', 'url': 'bucket.amazonaws.com'}]
  github_files: [{'file': 'file2.txt', 'url': 'github.com'}]

You can now subtract the matching lists

  result: "{{ array | difference(aws_files + github_files) }}"

to get what you want

  result: [{'file': 'file3.txt', 'url': 'example.com'}]

Or, you can reject joined patterns. The declaration below gives the same result

  result: "{{ array | rejectattr('url', 'match', patterns|join('|')) }}"

^{Example of a complete playbook for testing
- hosts: localhost

vars:

patterns:
- .*amazonaws\.com.*
- .*github\.com.*

array:
- {file: file1.txt, url: bucket.amazonaws.com}
- {file: file2.txt, url: github.com}
- {file: file3.txt, url: example.com}

aws_files: "{{ array | selectattr('url', 'match', patterns.0) }}"
github_files: "{{ array | selectattr('url', 'match', patterns.1) }}"

result: "{{ array | difference(aws_files + github_files) }}"
resul2: "{{ array | rejectattr('url', 'match', patterns|join('|')) }}"

tasks:

- debug:
msg: |
aws_files: {{ aws_files }}
github_files: {{ github_files }}
result: {{ result }}
resul2: {{ resul2 }}

Note: You can simplify the patterns
patterns:
- amazonaws\.com
- github\.com

and use search instead of match. The test match, quoting:

succeeds if it finds the pattern at the beginning of the string

but, the test search, quoting:

succeeds if it finds the pattern anywhere within the string}

Select items in list where attribute does *not* match regex pattern

Select items in list where attribute does not match regex pattern