def appartient(elt,tableau):
    for i in tableau:
        if i == elt:
            return True
        else:
            continue
    return False

if __name__ == "__main__":
    print(appartient(5,[1,2,3,4,5,6,7,8,9,10]))
    print(appartient(5,[1,2,3,4,6,7,8,9,10]))