Python Learning note--list's regular usage

Python's regular usage of the list has been tried, a summary of the function and usage, this does not include those "__xxx__" form of built-in functions

#__author__ = ' Hualong_zhang ' #-*-coding:utf-8-*-import sysreload (SYS) sys.setdefaultencoding (' utf-8 ') init_list_1 = [ 1, 4, 9, ' cat ', ' dog ', ' dog ', ' bird ', [' fish ']]init_list_2 = [1, 4, 9]print ' The Origin list 1 and 2:\n ', init_list_1, ' \ n ', Init_list_2init_list_1.append (16) # tail plus an element print init_list_1print init_list_1.count (' dog ') # Returns the number of occurrences of an element init_list_1.  Extend (init_list_2) # tail plus a listprint init_list_1print init_list_1.index (' Cat ') # returns an element position Init_list_1.insert (3, ' Bird ') # Insert Print Init_list_1for i in range (4): Init_list_1.pop () # Remove Init_li from post-eject print init_list_1init_list_1.remove (' dog ') # St_1.remove (' dog ') print init_list_1init_list_1.reverse () # inverse function Print init_list_1print str (init_list_1) #转换为字符串,  It's the kind of guy that's seen. Print repr (init_list_1) #抓换成能显示的东西, regardless of object, is different from str () #sort方法的使用list_for_sort = [1, 8, 2, 2, 2, 3, 3, 3, 3, 1, 7]print List_for_sortlist_for_sort.sort () #光一个sort, simple sort print list_for_sortlist_for_sort.sort (reverse=true) #翻转, i.e. reverse print List_for_sortlist_for_sort.sort (CMP, reverse=true) #用默The CMP is more inverted. can also be used for its own definition of cmpprint list_for_sort# with sort keylist_for_sort_2 = [(' Dog ', 7), (' Cat ', 6), (' Bird ', 3), (' Human ', 4), (' Fish ', 2 )]print List_for_sort_2list_for_sort_2.sort (Key=lambda x:x[0]) #按每一个元素第一项排序print list_for_sort_2list_for_sort_2. Sort (Key=lambda x: (X[1], x[0])) #比較优先级为先看第二项再看第一项print list_for_sort_2# sort the first indicator in CMP mode List_for_sort_2.sort (cmp= Lambda x,y:cmp (x[0],y[0]))

The results of the execution are as follows:

The origin list 1 and 2:
[1, 4, 9, ' cat ', ' dog ', ' dog ', ' bird ', [' Fish ']
[1, 4, 9]
[1, 4, 9, ' cat ', ' dog ', ' dog ', ' bird ', [' Fish '], 16]
2
[1, 4, 9, ' cat ', ' dog ', ' dog ', ' bird ', [' Fish '], 16, 1, 4, 9]
3
[1, 4, 9, ' bird ', ' cat ', ' dog ', ' dog ', ' bird ', [' Fish '], 16, 1, 4, 9]
[1, 4, 9, ' bird ', ' cat ', ' dog ', ' dog ', ' bird ', [' Fish ']
[1, 4, 9, ' bird ', ' cat ', ' bird ', [' Fish ']]
[[' Fish '], ' bird ', ' cat ', ' bird ', 9, 4, 1]
[[' Fish '], ' bird ', ' cat ', ' bird ', 9, 4, 1]
[[' Fish '], ' bird ', ' cat ', ' bird ', 9, 4, 1]
[1, 8, 2, 2, 2, 3, 3, 3, 3, 1, 7]
[1, 1, 2, 2, 2, 3, 3, 3, 3, 7, 8]
[8, 7, 3, 3, 3, 3, 2, 2, 2, 1, 1]
[8, 7, 3, 3, 3, 3, 2, 2, 2, 1, 1]
[(' Dog ', 7), (' Cat ', 6), (' Bird ', 3), (' Human ', 4), (' Fish ', 2)]
[(' Bird ', 3), (' Cat ', 6), (' Dog ', 7), (' Fish ', 2), (' Human ', 4)]
[(' Fish ', 2), (' Bird ', 3), (' Human ', 4), (' Cat ', 6), (' Dog ', 7)]
[(' Bird ', 3), (' Cat ', 6), (' Dog ', 7), (' Fish ', 2), (' Human ', 4)]


Process finished with exit code 0

Python Learning note--list's regular usage