LinkedIn: Extract datetime from post URL.

linkedin_extract_datetime.py

import datetime
from urllib.parse import urlparse


def linkedin_post_datetime(url: str) -> datetime.datetime:
    """
    Convert LinkedIN post URL to datetime of when the post was created.
    
    You can gen the post URL by clicking tripple dots in upper right corner of the post 
    and then selecting "Copy link to post".
    
    Returns a localized URL.
    
    Example usage:
    
        linkedin_post_datetime("https://www.linkedin.com/posts/tomas789_netzero-renewables-gas-activity-7077221689796784128-dafy")
    
    Original Gist URL: https://gist.github.com/tomas789/8fb07dd214430b954080766a1430c9b4
    
    Author: [@tomas789](https://github.com/tomas789)
    """
    # Parse URL
    url_parts = urlparse(url)
    
    # Extract 19 digit post id from the URL
    _, _, name = tuple(url_parts.path.split("/"))
    username, post_name = tuple(name.split("_", maxsplit=1))
    slug, post_id, _ = tuple(post_name.rsplit("-", maxsplit=2))
    
    # Convert post id to binary, take first 41 bits and convert that to int
    post_timestamp = int(f"{int(post_id):b}"[:41], 2)
    
    # Convert timestamp to datetime object and add timezone.
    post_datetime = datetime.datetime.fromtimestamp(post_timestamp / 1000).replace(tzinfo=datetime.timezone.utc)

    return post_datetime