What is python slicing?

What is python slice?

Slicing refers to the concept of taking out a part of the operation object

Strings, lists, and tuples all support slicing syntax

The syntax of slicing is [ Start : End : Step size]

Note here: the selected interval is closed on the left and open on the right, that is, including the starting position and excluding the ending position

1 String slice

The above means intercepting the characters wangl

2 Advanced

(1) Step size

The above is the basic usage, the step size means intercepting every few digits

, such as:

The intercepted string should be wnl

(2) Usage of -1

In the slice, -1 represents the meaning of the last digit

For example,

The intercepted string should be wnl. Why is it not obtained? Because -1 represents the last digit, which is the sixth digit, but the slice area is Left closed and right open. So i

is not included. Related recommendations: "Python Tutorial"

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