My_python ~ Storage Related ~

Str,int,list,tuple,dict is a type call that produces an instance

1>>> brand=["Li Ning",'Nike','Adidas','Fish C']2>>> slogan=['everything is possible .','Just Do it','Impossible is nothing','let programming change the world']3>>> Print ("the slogan of Fish C is:", Slogan[brand.index ('Fish C')])4The slogan of Fish C is: Let programming change the world

1>>> dict1={"Li Ning":"everything is possible .",'Nike':"Just Do it",'Adidas':'Impossible is nothing'}2>>> Print (dict1['Li Ning'])3 everything is possible .4>>> Print (dict1["Li Ning"])5Everything is possible.

 1  >>> # dict can only pass in one parameter.  2  >>> dict1=dict ((( f  , 70 ), [   i   ", ])  3  >>> Dict1  4  { f   ": 70 , "  i  : 105 } 

1>>># dict can only pass in one parameter.2>>> Dict1=dict (('F', -),['I', the]))3>>>Dict14{'F': -,'I': the}5>>> dict1['F']=100006>>>Dict17{'F':10000,'I': the}8>>> dict1["QQ"]="Money"9>>>Dict1Ten{'F':10000,'I': the,'QQ':'Money'}

in the list if you are using a function that does not have an error, but in the dictionary, if it does not, it will automatically create a. As above.

1>>> Dict1.fromkeys ((1,2,3))2{1: None,2: None,3: None}3>>> Dict1.fromkeys ((1,2,3),'Num')4{1:'Num',2:'Num',3:'Num'}

If you use Fromkeys directly, you will get an error.

1>>> Dict1=dict1.fromkeys (Range (1,9),'likes')2 Traceback (most recent):3File"<pyshell#0>", line1,inch<module>4Dict1=dict1.fromkeys (Range (1,9),'likes')5Nameerror:name'Dict1'  isNot defined6>>> dict1={}7>>> Dict1=dict1.fromkeys (Range (1,9),'likes')8>>>Dict19{1:'likes',2:'likes',3:'likes',4:'likes',5:'likes',6:'likes',7:'likes',8:'likes'}

1>>> forIinchDict1.items ():2 I3 4     5(1,'likes')6(2,'likes')7(3,'likes')8(4,'likes')9(5,'likes')Ten(6,'likes') One(7,'likes') A(8,'likes')

1>>> forIinchdict1.values ():2 I3 4     5 'likes'6 'likes'7 'likes'8 'likes'9 'likes'Ten 'likes' One 'likes' A 'likes'

1>>> A={1:' One', 2:' Both'}2>>> b=a.copy ()3>>> c=a4>>>ID (a)5486828486>>>ID (b)7488541208>>>ID (c)948682848Ten>>>#So a shallow copy is to put the content in another piece of storage area

add elements in bulk in Dict.

1>>> A={1:' One', 2:' Both'}2>>> b={3:'three', 4:' Four'}3>>> a=a+b4 Traceback (most recent):5File"<pyshell#2>", Line 1,inch<module>6a=a+b7typeerror:unsupported operand type (s) for+:'Dict'  and 'Dict'8>>>A.update (b)9>>>aTen{1:' One', 2:' Both', 3:'three', 4:' Four'} One>>>B.update (a) A>>>b -{1:' One', 2:' Both', 3:'three', 4:' Four'}

a visible dictionary can have a collection of features ~ ' Unique '

My_python ~ Storage Related ~