Is there any option to get duration of GitLab's pipeline using curl/python requests?

There are a couple of values in the status dict which can be pre-defined in your code, e.g.:

false = False
null = None

Then you can do:

status = { "id": 7475, "sha": "someid", "ref": "Someref", "status": "success", "created_at": "2021-04-28T12:07:17.807Z", "updated_at": "2021-04-28T12:07:36.071Z", "web_url": "https://git.somedomain.net/infra/some_project/pipelines/7475", "before_sha": "0000000000000000000000000000000000000000", "tag": false, "yaml_errors": null, "user": { "id": 85, "name": "some.name", "username": "some.name", "state": "active", "avatar_url": "https://secure.gravatar.com/avatar/someid?s=80&d=identicon", "web_url": "https://git.somedomain.net/some.name" }, "started_at": null, "finished_at": "2021-04-28T12:07:36.070Z", "committed_at": null, "duration": null, "coverage": null, "detailed_status": { "icon": "status_success", "text": "passed", "label": "passed", "group": "success", "tooltip": "passed", "has_details": false, "details_path": "/infra/some_project/pipelines/7475", "illustration": null, "favicon": "/assets/ci_favicons/favicon_status_success-8451333011eee8ce9f2ab25dc487fe24a8758c694827a582f17f42b0a90446a2.png" } }

Then use the datetime module to:

1. convert strings to datetime objects (reference: https://docs.python.org/3/library/datetime.html#strftime-and-strptime-format-codes), and

2. perform your duration calculation.

import datetime as dt

format_str = '%Y-%m-%dT%H:%M:%S.%fZ'
created_at = dt.datetime.strptime(status['created_at'],format_str)
finished_at = dt.datetime.strptime(status['finished_at'],format_str)

duration = finished_at - created_at

Result:

In [24]: duration
Out[24]: datetime.timedelta(seconds=18, microseconds=263000)