Python之元组方法

def count(self, value): # 计算元素出现的个数
    """ T.count(value) -> integer -- return number of occurrences of value """
    return 0

def index(self, value, start=None, stop=None): #获取指定元素的位置
    """
    T.index(value, [start, [stop]]) -> integer -- return first index of value.
    Raises ValueError if the value is not present.