def fetchclassletter(classeeleve) -> str:
    """
    FR :
    Fonction permettant de retrouver la lettre correspondante à son index.

    EN :
    Function to find the letter corresponding to its index.
    """
    listletters = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j"]
    lettreclasse = listletters[classeeleve]
    return lettreclasse.upper()