
    Write a function that validates if a student's learning module identifier follows the system's naming convention by checking if it consists only of lowercase letters connected by underscores. The function should return true if the module identifier matches this format (like "basic_algebra" or "reading_comprehension") and false otherwise.
    

    
import re

def text_lowercase_underscore(text):
    """
    Write a function that validates if a student's learning module identifier follows the system's naming convention by checking if it consists only of lowercase letters connected by underscores. The function should return true if the module identifier matches this format (like "basic_algebra" or "reading_comprehension") and false otherwise.
    

    """
import re

def text_lowercase_underscore(text):
    """
    Write a function that validates if a student's learning module identifier follows the system's naming convention by checking if it consists only of lowercase letters connected by underscores. The function should return true if the module identifier matches this format (like "basic_algebra" or "reading_comprehension") and false otherwise.
    

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