greedy phone number parser with regex in python

getphones.py

def greedyphoneparse(basetext="I can haz phone number? +14126723436") -> list():
    """Very flexible phone number parser that does not require country code.

    Args:
        basetext (string, optional): The text to parse. 
        Defaults to "I can haz phone number? +14126723436".

    Returns:
        list: List of phonenumbers found or empty list.
    """
    pattern = '[\+]?[(]?[0-9]{3}[)]?[-\s\.]?[0-9]{3}[-\s\.]?[0-9]{4,6}'
    phonenumbersfound = re.findall(pattern, basetext)
    if len(phonenumbersfound) > 0:
        return phonenumbersfound
    else:
        return []

Yes, the phonenumbers package exists that is based on Google's phone number parser. The problem (BIG problem) IMO is that it requires knowledge of the country code a priori, which is no bueno.