Page 134 - Code_GPT_Class_8
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Topic Flashback 21 st Century
Skills #Information Literacy
1. Write the syntax to create a list.
2. Write an example of nested list.
MODIFYING THE LIST ELEMENT
Lists are mutable, which means you can change the elements after the list is created without creating a
new space for storage of the changed list. You can do this by using an assignment operator (=).
Program 3: To change the elements of a list
Program3.py
File Edit Format Run Options Window Help
list1=[13, 25, 41, 63, 82]
list1[1]=50
Output
list1[3]=45
print(list1[:]) [13, 50, 41, 45, 82]
TRAVERSING A LIST
Traversing means accessing or visiting the elements of a list. Two ways to traverse a list are positive
indexing and negative indexing.
Positive Indexing
In positive indexing, the index of elements of a list starts from 0; which means if a list contains 10
elements then its index is from 0 to 9.
Factbot
If the user tries to access an element from a list beyond its defined range, then it will give an IndexError.
To access the list elements, the indexing operator or subscript operator [ ] is used.
CodeGPT (Ver. 4.0)-VIII
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