3 列表
#! /usr/bin/python
# -*- coding: utf8 -*-
# 列表类似 Javascript 的数组 ,方便易用
# 定义元组
word=[ 'a' ,'b' , 'c' ,'d' ,'e' , 'f' ,'g' ]
# 如何通过索引访问元组里的元素
a=word[2]
print ( "a is: " +a)
b=word[1:3]
print ( "b is: " )
print (b) # index 1 and 2 elements of word.
c=word[:2]
print ( "c is: " )
print (c) # index 0 and 1 elements of word.
d=word[0:]
print ( "d is: " )
print (d) # All elements of word.
# 元组可以合并
e=word[:2]+word[2:]
print ( "e is: " )
print (e) # All elements of word.
f=word[-1]
print ( "f is: " )
print (f) # The last elements of word.
g=word[-4:-2]
print ( "g is: " )
print (g) # index 3 and 4 elements of word.
h=word[-2:]
print ( "h is: " )
print (h) # The last two elements.
i=word[:-2]
print ( "i is: " )
print (i) # Everything except the last two characters
l=len(word)
print ( "Length of word is: " + str(l))
print ( "Adds new element" )
word.append( 'h' )
print (word)
# 删除元素
del word[0]
print (word)
del word[1:3]
print (word)
'''
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