
    Develop a function that generates a unique letter identifier for student essay submissions by summing the ASCII values of all characters in the submitted text and converting the sum to a corresponding letter (A-Z) using modulo 26. This single-letter checksum will serve as a quick preliminary indicator for detecting potential similarities between student submissions while preserving the original text's characteristics.
    

    
def get_Char(strr):
    """
    Develop a function that generates a unique letter identifier for student essay submissions by summing the ASCII values of all characters in the submitted text and converting the sum to a corresponding letter (A-Z) using modulo 26. This single-letter checksum will serve as a quick preliminary indicator for detecting potential similarities between student submissions while preserving the original text's characteristics.
    

    """
def get_Char(strr):
    """
    Develop a function that generates a unique letter identifier for student essay submissions by summing the ASCII values of all characters in the submitted text and converting the sum to a corresponding letter (A-Z) using modulo 26. This single-letter checksum will serve as a quick preliminary indicator for detecting potential similarities between student submissions while preserving the original text's characteristics.
    

    """
    summ = 0
    for i in range(len(strr)):
        summ += ord(strr[i]) - ord('a') + 1
    if summ % 26 == 0:
        return ord('z')
    else:
        summ = summ % 26
        return chr(ord('a') + summ - 1)