input: from typing import List, Dict
  
  
  def scrape_planets_info(url: str) -> List[Dict[str, str]]:
      """Scrape the table at the given URL and extract the planets information 
      (name, mass, and distance from the sun).
      >>> scrape_planets_info('https://en.wikipedia.org/wiki/List_of_gravitationally_rounded_objects_of_the_Solar_System')
      [{'name': 'Mercury', 'mass': '0.0553', 'distance_from_sun': '57.9'}, {'name': 'Venus', 'mass': '0.815', 'distance_from_sun': '108.2'}, ...]
      """
output:     
      import requests
      from bs4 import BeautifulSoup
  
      response = requests.get(url)
      soup = BeautifulSoup(response.text, 'html.parser')
      table = soup.find('table', {'class': 'wikitable'})
      rows = table.find_all('tr')[1:]
  
      planets_info = []
      for row in rows:
          cols = row.find_all('td')
          name = cols[0].text.strip()
          mass = cols[1].text.strip()
          distance_from_sun = cols[2].text.strip()
          planets_info.append({'name': name, 'mass': mass, 'distance_from_sun': distance_from_sun})
  
      return planets_info
  