
    Write a function that validates user interest tags in a social networking platform by checking if they follow the standard format of lowercase letters connected with underscores. The function should return true if the interest tag is properly formatted (like "machine_learning" or "outdoor_photography") and false otherwise.
    

    
import re

def text_lowercase_underscore(text):
    """
    Write a function that validates user interest tags in a social networking platform by checking if they follow the standard format of lowercase letters connected with underscores. The function should return true if the interest tag is properly formatted (like "machine_learning" or "outdoor_photography") and false otherwise.
    

    """
import re

def text_lowercase_underscore(text):
    """
    Write a function that validates user interest tags in a social networking platform by checking if they follow the standard format of lowercase letters connected with underscores. The function should return true if the interest tag is properly formatted (like "machine_learning" or "outdoor_photography") and false otherwise.
    

    """
    patterns = '^[a-z]+_[a-z]+$'
    if re.search(patterns, text):
        return True
    else:
        return False