input: Write a python function to fetch and print all the text content from a given URL using requests and BeautifulSoup.
  assert fetch_and_print_text("http://example.com") is None
output: def fetch_and_print_text(url):
      import requests
      from bs4 import BeautifulSoup
  
      response = requests.get(url)
      soup = BeautifulSoup(response.content, 'html.parser')
      text = soup.get_text()
      print(text)