python数据结构

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

#!/usr/bin/python
# Filename: using_list.py

# This is my shopping list
shoplist = ['apple', 'mango', 'carrot', 'banana']

print 'I have', len(shoplist),'items to purchase.'

print 'These items are:', # Notice the comma at end of the line
for item in shoplist:
    print item,

print '\nI also have to buy rice.'
shoplist.append('rice')
print 'My shopping list is now', shoplist

print 'I will sort my list now'
shoplist.sort()
print 'Sorted shopping list is', shoplist

print 'The first item I will buy is', shoplist[0]
olditem = shoplist[0]
del shoplist[0]
print 'I bought the', olditem
print '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.py

name = 'Swaroop' # This is a string object

if 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']