Chapter 7.3, Problem 11CP

Program Plan Intro

List slicing:

• • Slicing is a concept of selecting a range of elements from a list.
• • In Python, an expression that selects a subsection of a list is known as a slice.
• • A slice is a span of elements that are taken from a list.
• • Normally, the slice expression has a start index and an end index for slicing.
• • In case if the start index is not provided, the python employs 0 as the start index.

Syntax:

In Python, the list slice statement without start index can be expressed as follows:

listname[:end]

Explanation:

In the list slice syntax,

• • If the “start” index is not provided, then python uses 0 as the start index by default.
• • “end” represents the index that marks the end of the slice.
• • The list slice expression returns a list having a copy of data from index “0” up to index “end-1”.