How to block URLs with Python Regex List

[badis]

Hello,
What is the Python code behind the pfb_regex_list? In the description, I have "List of Python Regex's to block via DNSBL." I don't know which Python method is used to check if a URL is valid or not.

    pattern = re.compile(r'some regex')

    # Examples
    url1 = "https://someurl?param=somevalue"

    if pattern.match(url1):
        print(f"{url1} is match")
    else:
        print(f"{url1} is not match")
		
	
     ******************* OR *********************
	 
	if pattern.search(url1):
        print(f"{url1} is valid")
    else:
        print(f"{url1} is not valid")
		

How i can build this pattern ?