Python Common data types

/usr/bin/python env# -*- coding:utf-8 -*-#字符串  string  ' or ' or '   ' To represent name =  ' What is your name? ' >>> name.capitalize ()                 #  capitalize the first letter of the string ' What is your name? ' >>> name =  "Su shi"   >>> name.title ()                #首字母大写    ' Su shi ' >>>  Name.upper ()               #字母大写 ' Su shi ' >>> name.lower ()              # Letter lowercase ' su shi ' name =  ' What is your name? ' >>> name.center (+, ' * ')             # String width padding, using the original string + padding character to form a new string of the specified length      ' what is your name?****** ' name =  ' What is your name? ' >>> name.endswith (' s ')             # Determines whether a string ends with a string  true or Flasefalse>>> name.endswith ('? ') true>>> name =  " s j d "  >>> name.lstrip ()               #去掉前面空格 ' s j d  ' >>> name.rstrip ()              # Remove the trailing space '  s j d ' >>> name.strip ()                 #去掉前后空格 (any parameter can be written in parentheses) ' s j d ' name =  ' what is  Your name? ' >>> name.find (' i ')             # Finds the specified string in the string and returns-    5>>&GT when it is not found;  name.find (' SS ') -1>>> name.replace (' name ', ' SSS ')           #替换特定字符 ' what is your sss? ' Split into List>>> name.split () [' What ',  ' is ',  ' your ',  ' name? '       #分割为list (can be written in parentheses with any character split) >>> print  "ssss\njjjjjjjj\tkkkkkkkkk\n \tllllllllllll "ssssjjjjjjjj    kkkkkkkkk    llllllllllll                 \t  Indent  \n  line feed

English word:
Title:
N. champion; title; titles; rights; subtitles
Vt. Add title to; give title; called the
Adj. title;

Upper:
adj. Above, upper, High
N. (upper) names; (British) Ernie

Lower:
Vt. Weaken, reduce, lower, lower; belittle.
VI. Reduce, weaken, drop
Adj. downstream, subordinate, inferior
N. (Lower) name; (English, Italian) Mrs. Lowery

Strip:
Vt. Take away, strip, strip; strip, striptease
VI. Undress

Split
Vt. Separate, split, split, leave, break up
VI. To leave, to be split, to sever a relationship
N. split; crack
adj. split

Replace
Vt. Replace, replace, replace, To replace, return, repay, or pay for; Put it back in the same place

Capitalize
Vt. Capitalization; write in uppercase letters; estimate ... The value of
VI. Use; accumulate capital

Center
N. Center, Central; center point
Adj. Central, bit in the middle of the
Vt. Centered, so that it gathers at a point; Center
VI Center, is placed in center
N. Center) name (English) Saint

#列表  list  [] to denote >>> names = [' chenglong ', ' Zhangjie ', ' wujing ']        #chenglong代表本列表的元素, where he is called index >>> print names[0]chenglong>>>  print names[-1]                  #访问素数时之返回该元素   Do not include brackets and quotes wujing>>> names[0] =  ' Jiecheng '               #修改元素 >>> names[' Jiecheng ',  ' Zhangjie ',  ' wujing '] >>> names.append (' sushi ')               #末尾添加元素 >>> names[' Jiecheng ',  ' Zhangjie ',  ' wujing ',   ' Sushi '] >>> names.insert (0, ' fangzunming ')           #在任意位置插入元素 >>> names[' fangzunming ',  ' Jiecheng ',  ' Zhangjie ',  ' wujing ',  ' Sushi ']>>> del names[3]                  #在任意位置删除元素 >>> names[' fangzunming ',  ' Jiecheng ',  ' Zhangjie ',  ' wujing ',  ' Zl2 ',  ' sucan ',  ' Sushi '] method pop ()   Delete element >>> poppen_name = names.pop ()     in parentheses can write any index >>> print poppen_namesushi>>> print names[' fangzunming ',   ' Jiecheng ',  ' Zhangjie ',  ' wujing ',  ' zl2 ',  ' Sucan ']>>> name.index (' Jiecheng ')     #获取元素的索引1 >>> print names[' Jiecheng ',  ' Zhangjie ',  ' Wujing ',  ' zl2 ',  ' Sucan ']   #根据值删除元素 >>> names.remove (' zl2 ') >>>  print names[' Jiecheng ',  ' Zhangjie ',  ' wujing ',  ' Sucan ']

English words
Insert
Vt. Insert; embed
N. Inserting material

Append
Vt. Attach, affix, affix, stamp
N. Setting the search path for a data file

Del
N. Deleting a file; [number] inverted triangle
N. (Del) name; (Hungary) Dell; (Cambodia)

Pop
Pop

#对列表进行永久性排序 >>> names = [' B ', ' C ', ' d ', ' a '] forward >>> names.sort () >>> names[' A ', ' B ', ' C ', ' d ']> >> Names.sort (reverse=true) reverse >>> names[' d ', ' C ', ' B ', ' A ']>>> #对列表进行临时排序 >>> sorted ( names) [' A ', ' B ', ' C ', ' d '] #reverse反转列表 >>> print names[' d ', ' C ', ' B ', ' A ']>>> names.reverse () >>& Gt Print names[' A ', ' B ', ' C ', ' d '] #确定列表的长度 >>> print names[' A ', ' B ', ' C ', ' d ']>>> len (names) 4

>>> digits = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0]>>> min (digits) min 0>>> max (digits) Max 9>>& Gt sum (digits) Total 45

English words
Sorted
Adj, classified, sorted, selected, or selected
V. [GAUGE] Category (sort of past participle)
Reverse
N. reverse; reverse; fail.
Vt. To reverse the reversal of;
Adj adj. Opposite, reversed, or reflexive
VI. retrogression; inverse call
Sort
N. kind; way; quality
VI. Classification, coordination, communication
Vt. Will... to classify; To pick out something in a sort of order;

Range
N. scope; range; row; mountain
VI. Parallel, as a line; extend; roam; reach
Vt. To make a parallel or a move.
N. (Range) name; (Portugal) Causingthe; (Sweden, Germany) Lange

Dictionary dict uses {} to denote >>> dict = {' name ': ' Jike ', ' age ': ' Job ': ' IT '} >>> dict [' Name ']   #查看key对应的值 ' jike ' >>> dict.get (' name ')      #查不到不报错 ' Jike ' >>> dict.get (' SSS ') >>> dict.has_key (' name ')    #判断是否存在这个keyTrue >> > dict.has_key (' JJ ') false>>> dict.setdefault (' addr ', ' Beijing ')     # No then add   have the return value ' Beijing ' >>> dict{' addr ':  ' Beijing ',  ' job ':  ' IT ',  ' age ':  30,  ' name ':  ' jike '}>>> dict.setdefault (' age ', 30>>> dict{' addr '):   ' Beijing ',  ' job ':  ' IT ',  ' age ': 30,  ' name ':  ' Jike '}>>> a  = {' addr ': ' Shanghai ', ' getder ': ' Nan '}>>> dict.update (a)               #没有添加, there is a replacement >>> dict{' job ':  ' IT ',  ' getder ':   ' nan ',  ' addr ': ' Shanghai ',  ' age ': 30,  ' name ':  ' jike '}>>> dict.pop (' name ')   #删除key对应的值 ' Jike ' >>> dict{' job ':  ' IT ',  ' age ':  30}>>> dict[' name ']=  ' Hukang '   #增加key对应值 >>> dict{' job ':  ' IT ',  ' age ': 30,  ' name ':  ' Hukang '}> >> dict.popitem ()    #随机删除key对应值 (' Job ',  ' IT ') >>> dict{' age ':  30,   ' name ':  ' Hukang '}dict = {' name ': ' Jieke ', ' age ': ' A ', ' job ': ' IT '}for i in  dict:    print i,dict[i]      #打印字典全部keyfor  k,v in  dict.items ():      #打印字典全部key (smaller dictionary) to list     print k,v >>> dict = {' name ': ' Jike ', ' age ': ' Job ': ' IT '}>>> dict2 =   dict         #起一个别名 >>> dict2{' job ':  ' IT ',   ' age ': 30,  ' namE ':  ' jike>>> dict3 = dict.copy ()      #浅copy >>>  dict3{' job ':  ' IT ',  ' age ': 30,  ' name ':  ' Jike '}>>> dict4 =  Copy.deepcopy (dict)      #深copy (full copy) >>> dict{' job ':  ' IT ',  ' age ':  30,  ' name ':  ' Jike '}

 collection   Features: go to heavy  , Relationship test >>> name = {1,2,3,4} >>> type (name) <type  ' Set ' >>>> names = {3,4,5,6}>>>  name,names (Set ([1, 2, 3, 4]),  set ([3, 4, 5, 6])) >>>  name & names     #交集set ([3, 4]) >>> names | name      #合集set ([1, 2, 3, 4, 5, 6])          >>> name - names     #差级      Set ([1, 2]) 

For __ in __: Loop list

If __[< > =! =] __: Judging, contrasting

While true: True
A = Inpput user input

English words
Break
VI. Break down;
Vt. To break (make) (a record) or (usually a good weather) to change; start
VI. (voice) mutation; break out; sudden fall of (price)
N. Rupture, interruption, change (a condition that lasts for a period of time), intermittent

Continue
VI. Continuation, continuation, continuous
Vt. Continue to say ... N. to make a. To make a move; Extend

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Python Common data types