python_7(索引、切片)

#!/usr/bin/python
# -*- coding: UTF-8 -*-

#索引操作
tuple = ("apple", "banana", "grape", "orange")
list = ["apple", "banana", "grape", "orange"]
str = "apple"
print tuple[0]
print tuple[-1]
print list[0]
print list[-1]
print str[0]
print str[-1]

#分片操作
tuple = ("apple", "banana", "grape", "orange")
list = ["apple", "banana", "grape", "orange"]
str = "apple"
print tuple[:3]
print tuple[3:]
print tuple[1:-1]
print tuple[:]
print list[:3]
print list[3:]
print list[1:-1]
print list[:]
print str[:3]
print str[3:]
print str[1:-1]
print str[:]

输出

>>>
apple
orange
apple
orange
a
e

('apple', 'banana', 'grape')
('orange',)
('banana', 'grape')
('apple', 'banana', 'grape', 'orange')
['apple', 'banana', 'grape']
['orange']
['banana', 'grape']
['apple', 'banana', 'grape', 'orange']
app
le
ppl
apple