Python元组，妈妈再也不会担心我不会Python了(九)

元组

• 元组和列表相似，不同点元组定义后不能改变，列表可以做改变。
• 元组用小括号，列表用中括号。

#tuple
#元组定义
students = ("张三","李四","王五")

列表常用操作

• 打印元素

#tuple
#元组定义
students = ("张三","李四","王五")

print(students[0])
print(students[1])
print(students[2])

上述代码运行结果:

• 遍历元素

#tuple
#元组定义
students = ("张三","李四","王五")

for i in students:
    print(i)
'''
用while循环也可以
i = 0
while i < len(students):
    print(students[i])
    i+=1
'''

上述代码运行结果:

• 统计

#tuple
#元组定义
students = ("张三","李四","王五","李四")
print("叫李四的人有%d个"%students.count("李四"))

上述代码运行结果:

• 查索引

#tuple
#元组定义
students = ("张三","李四","王五","李四")
print("王五的索引是%d"%students.index("王五"))

上述代码运行结果: