Python list Slicing

The Python List supports slicing.And allows us to cut out the desired data according to our own needs.

The slice of the List is mainly operated in three directions:

For example, M = [1, 2, 3, 44, 11]
1. forward index:
Direction: left to right

C = m [1: 3]
The output result is: [2, 3]

2 reverse index:
The direction is from right to left.

For example, D = m [-1]
The result is 11. The value direction is from right to left, and-1 indicates the last one.

3 default index:

If the start is omitted, the default value starts from 0, for example, M [: 3]. The result is: [1, 2, 3].
If the end is omitted, the default length is-1, for example, M [1:]. The result is: [2, 3, 44, 11].
To output all the contents of the list, use M [:]. Starts from the beginning to the end.