01Python Base _02 Variable

1. Digital numbers:

int long float Complex

51924361L 0.0 3.14j

100-0x19323l 15.20 45.J

-786 0122l-21.9 9.322e-36j

080 0xDEFABCECBDAECBFBAEl 32.3e+18.876j

-0490 535633629843l-90. -.6545+0j

-0x260-052318172735l-32.54e100 3e+26j

0x69-4721885298529l 70.2E-12 4.53e-7j

2. String: ' '

The string is: ordered, immutable

1 ' Ilovepython ' 2 Print (S[1:5])        # Out:love

3. List: []

The list is: ordered, variable

1List = ['Runoob', 786, 2.23,'John', 70.2 ]2Tinylist = [123,'John']3 4 PrintList#[' Runoob ', 786, 2.23, ' John ', 70.2]5 PrintLIST[0]#Runoob6 PrintList[1:3]#[786, 2.23]7 PrintList[2:]#[2.23, ' John ', 70.2]8 PrintTinylist * 2#[123, ' John ', 123, ' John ']9 PrintList + tinylist#[' Runoob ', 786, 2.23, ' John ', 70.2, 123, ' John ']

4. Tuple tuples: ()

Tuples are: Ordered, immutable

 1  tuple = ( " runoob  , 786, 2.23, "  john   ", 70.2 2  list = [ " runoob  " , 786, 2.23,  " john   ", 70.2]  3  TUPLE[2] = #   4  list[2] = #   list is a legitimate application /span> 

5. Dictionary dict: {}

The dictionary is: unordered, key value immutable, value variable

1Dict = {}2dict[' One'] =" This is one"3DICT[2] =" This is the"4Tinydict = {'name':'John','Code': 6734,'Dept':'Sales'}5  6 Printdict[' One']# This is one7 PrintDICT[2]# This is the8 PrintTinydict#{' dept ': ' Sales ', ' Code ': 6734, ' name ': ' John '}9 PrintTinydict.keys ()#[' dept ', ' Code ', ' name ']Ten PrintTinydict.values ()#[' Sales ', 6734, ' John ']

01Python Base _02 Variable