Python-day3 list Inside Hi method

1. Correct creation of List objects

Li = List ([1,2,3,4])
Li2 = List ((1,2,3,4))

2.append

result = Li.append (5)

3.clear

result = Li.clear ()

4. Copy---1. Shallow copy, deep copy

Eg: the list assumes that there is a dictionary or a list, a shallow copy refers to a copy only the first layer, the deep copy as the name implies the copy to the bottom.

5.extend--Extensions (list, ganso)

Li = List ([1,2,3,4])
result = Li.extend ([55, 55,])
Print (LI)

6.insert Increase in index location

Li = List ([1,2,3,4])
result = Li.insert (2,33)
Print (LI)

7.pop Remove, return the removed value, remove the last one by default

Li = List ([1,2,3,4])
Resulet = Li.pop (0)
Print (LI)
Print (Resulet)

8.remove Remove---Remove from left to right and return none after removal

Li = List ([1,2,3,4])
Print (LI)
result = Li.remove (1)
Print (LI)

9 reverse reversal, all sequences are reversed

Li = List ([1,2,3,4])
Print (LI)
result = Li.reverse ()
Print (LI)

Learn the following points and practice them in a scene

Python-day3 list Inside Hi method