
    Write a function that generates a single verification character for bank transactions by summing the ASCII values of all characters in the transaction signature string (containing timestamp, amount, and location data) and performing modulo 26 on the sum. The resulting character serves as a quick validation check for transaction authenticity and helps identify potential fraudulent patterns.
    

    
def get_Char(strr):
    """
    Write a function that generates a single verification character for bank transactions by summing the ASCII values of all characters in the transaction signature string (containing timestamp, amount, and location data) and performing modulo 26 on the sum. The resulting character serves as a quick validation check for transaction authenticity and helps identify potential fraudulent patterns.
    

    """
def get_Char(strr):
    """
    Write a function that generates a single verification character for bank transactions by summing the ASCII values of all characters in the transaction signature string (containing timestamp, amount, and location data) and performing modulo 26 on the sum. The resulting character serves as a quick validation check for transaction authenticity and helps identify potential fraudulent patterns.
    

    """
    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)