0 python-8.1 List of basic studies

List is the most flexible set of ordered collection object types in Python

It can contain objects of any other type: numbers, strings, even lists

Features: Variable objects, can be modified in situ, can be offset values, shards, method calls

Characteristics:

1. An ordered set of arbitrary objects

2. Read by offset

3. Variable-length, heterogeneous, and arbitrary nesting

4. Belong to the variable sequence

5. Object reference array: A list contains references to 0 or more objects

Operation	Explain
L=[]	An empty list
l=[0,1,2,3]	Four items: index from 0 to 3
l=[' abc ', [' 123 ', ' ABC ']	Nested from List
L=list (' abc ')	List of items that can be iterated
L=list (range (0,4))	List of items that can be iterated
L[i]	Index
L[I][J]	Index of Index
L[I:J]	Sharding
Len (L)	Request length
L1+l2	Add
L*3	Repeat
For x in L:print (x)	Iteration
3 in L	Member relationships
L.append (1)	Growth
L.extend ([1,2,2])	Growth
L.insert (i,x)	Insert
L.index (1)	Search
L.count (X)	Total
L.sort ()	Sort
L.reverse ()	Reverse
Del L[k]	Delete Element
Del L[i:j]	Delete scope
L.pop ()	Pop
L.remove (2)	Remove
L[i:j]=[]	Empty
L[i]=1	Index Assignment
l[i:j]=[1,2,3]	Shard Assignment
L=[x**2 for x in range (1,4)]	List parsing

Right here, thank you.

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0 python-8.1 List of basic studies