1.count方法：统计元素在元组中出现的次数
tup1 = ('apple', 'banana', 'cherry', 'apple')
print(tup1.count('apple')) # 2
2.index方法：返回元素在元组中的索引位置
tup1 = ('apple', 'banana', 'cherry', 'apple')
print(tup1.index('banana')) # 1
3.len方法：返回元组中元素的个数
tup1 = ('apple', 'banana', 'cherry', 'apple')
print(len(tup1)) # 4
4.元组解包：将元组中的每个元素赋值给一个变量
tup1 = ('apple', 'banana', 'cherry')
a, b, c = tup1
print(a) # 'apple'
print(b) # 'banana'
print(c) # 'cherry'
5.比较运算符：用于比较两个元组的大小（从第一个元素开始比较，若相同则继续往下比较）
tup1 = ('apple', 'banana', 'cherry')
tup2 = ('apple', 'banana', 'orange')
tup3 = ('apple', 'banana', 'cherry')
print(tup1 > tup2) # False
print(tup1 == tup3) # True
print(tup1 < tup2) # True
6.合并运算符：用于连接两个元组
tup1 = ('apple', 'banana', 'cherry')
tup2 = ('orange', 'lemon', 'pear')
tup3 = tup1 + tup2
print(tup3) # ('apple', 'banana', 'cherry', 'orange', 'lemon', 'pear')
7.in运算符：用于判断元素是否在元组中
tup1 = ('apple', 'banana', 'cherry')
print('apple' in tup1) # True
print('orange' in tup1) # False
