Python list, tuple, collection, dictionary differences, and mutual conversions

Differences in lists, tuples, collections, dictionaries set

	list	tuple		dictionary
English	List	Tuple	Set	Dict
can read and write	Write	Read-only	Write	Write
Can I repeat	Is	Is	Whether	Is
Storage mode	Value	Value	Key (cannot be duplicated)	Key-value pairs (keys cannot be duplicated)
is ordered	Ordered	Ordered	Disordered	Unordered, automatic positive order
Initialization	[1,‘a‘]	(‘a‘, 1)	set([1,2])Or{1,2}	{‘a‘:1,‘b‘:2}
Add to	append	Read-only	add	d[‘key‘] = ‘value‘
Read elements	l[2:]	t[0]	No	d[‘a‘]

Lists, tuples, collections, dictionaries convert list tuples to other

‘‘‘#列表转集合 (out of weight)
List1 = [6,7,8,8,9]
A=set (List1)
Print (a)
‘‘‘ 
‘‘‘
#两个列表转字典
List1 = [' Key1 ', ' key2 ', ' Key3 ']
List2 = [' 1 ', ' 2 ', ' 3 ']B
=dict (Zip (list1,list2))
Print (b) #嵌套列表转字典
LIST3 = [[' Key1 ', ' value1 '],[' key2 ', ' value2 '],[' Key3 ', ' value3 ']
C=dict (LIST3)Print (c)
‘‘‘ 
‘‘‘
# list, tuple to string
List2 = [' A ', ' a ', ' B ']
D= '. Join (LIST2)
Print (d)
‘‘‘
‘‘‘T
Up1 = (' A ', ' a ', ' B ')
D= '. Join (TUP1)
Print (d)
‘‘‘
‘‘‘
#字典转其他
# Dictionary converted to string
Dic1 = {' A ': 1, ' B ': 2}
E=str (DIC1)
Print (e)
‘‘‘
‘‘‘
# Dictionary key and value cross-transfer
Dic2 = {' A ': 1, ' B ': 2, ' C ': 3}
Dic3={value:key for key, value in Dic2.items ()}
Print (DIC3)
‘‘‘
#字符串转其他
# string Goto List
s =' AABBCC '
f=List (s)
Print (f)
# String to tuples
g=tuple (s)
Print (g)
# string to go to collection
H=Set (s)
Print (h)
# String to Dictionary
Dic2 = eval ("{' name ': ' Ljq ', ' Age ': 24}")
Print (DIC2)
# Slicing strings
A = ' a b C '
I=a.split (")
print (i)               

Python list, tuple, collection, dictionary differences, and mutual conversions