List concatenation: speed : List Cancatenation « List « Python

1. Python
2. List
3. List Cancatenation

List concatenation: speed

 
L = [1, 2]
L = L + [3]            # concatenate: slower
print L

L.append(4)            # faster, but in-place
print L

L = L + [5, 6]         # concatenate: slower
print L

L.extend([7, 8])       # faster, but in-place
print L

L += [9, 10]       # mapped to L.extend([9, 10])
print L


           
         
  

Related examples in the same category

1.	Using List Operators
2.	Concatenation ( + )
3.	Concatinate two lists
4.	List concatenation Demo