What does a[1:] mean in Python?

What does a[1:] mean in python? Here is a detailed introduction to you:

String interception, also called string slicing, uses square brackets [ ] to intercept strings. In Python, a single character is also used as a string.

String [start index: end index: step size]

Start index: start interception from the specified position;

End index: end interception from the specified position, but not Contains the characters at that position.

Step size: When not specified, the step size is 1;

String [start index: end index]

String interception follows the principle of "left closed and right opened", Also called "include left but not right"

Example:

>>> a=[1,2,3,4,5]
>>> print(a[1:])
[2, 3, 4, 5]
>>> a=(1,2,3,4,5)
>>> print(a[1:])
(2, 3, 4, 5)

a[1:]

a is a character String, 1 is the starting index, if the ending index is not specified, it defaults to the last digit. String interception follows the "left-closed, right-open" principle, that is, intercepting starts from 1, excluding 1, and intercepts to the last digit, including the last digit.

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