python数据结构

Python  /  houtizong 发布于 3年前   230

help(int)
help(str)
----------list----------

#!/usr/bin/python# Filename: using_list.py# This is my shopping listshoplist = ['apple', 'mango', 'carrot', 'banana']print 'I have', len(shoplist),'items to purchase.'print 'These items are:', # Notice the comma at end of the linefor item in shoplist:    print item,print '\nI also have to buy rice.'shoplist.append('rice')print 'My shopping list is now', shoplistprint 'I will sort my list now'shoplist.sort()print 'Sorted shopping list is', shoplistprint 'The first item I will buy is', shoplist[0]olditem = shoplist[0]del shoplist[0]print 'I bought the', olditemprint 'My shopping list is now', shoplist

del len() append() sort() [int]
----------元组------
单个元组特殊 (2,)
---------字典---
ab = {       'Swaroop'   : '[email protected]',
             'Larry'     : '[email protected]',
             'Matsumoto' : '[email protected]',
             'Spammer'   : '[email protected]'
     }
--------------索引------
shoplist = ['apple', 'mango', 'carrot', 'banana']
name = 'swaroop'
name[1:3]
name[2:]
name[1:-1]
name[:]
mylist = shoplist # mylist is just another name pointing to the same object!
mylist = shoplist[:] # make a copy by doing a full slice


--------------str-------

#!/usr/bin/python# Filename: str_methods.pyname = 'Swaroop' # This is a string objectif name.startswith('Swa'):    print 'Yes, the string starts with "Swa"'if 'a' in name:    print 'Yes, it contains the string "a"'if name.find('war') != -1:    print 'Yes, it contains the string "war"'delimiter = '_*_'mylist = ['Brazil', 'Russia', 'India', 'China']