
    Write a function to validate whether a learning module identifier follows the platform's naming convention, which requires course sections to be written in lowercase letters and connected by underscores. The function should return true if the module identifier follows this format (like "basic_algebra_fundamentals") and false otherwise.
    

    
import re

def text_lowercase_underscore(text):
    """
    Write a function to validate whether a learning module identifier follows the platform's naming convention, which requires course sections to be written in lowercase letters and connected by underscores. The function should return true if the module identifier follows this format (like "basic_algebra_fundamentals") and false otherwise.
    

    """
import re

def text_lowercase_underscore(text):
    """
    Write a function to validate whether a learning module identifier follows the platform's naming convention, which requires course sections to be written in lowercase letters and connected by underscores. The function should return true if the module identifier follows this format (like "basic_algebra_fundamentals") and false otherwise.
    

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