Python List

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1) Create a List

Create a list of 5 numbers and print it.

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2) Access an Element

Given:

lst = [10, 20, 30, 40, 50]

Print the 3rd element.

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3) Change an Element

Change the 2nd element in this list to 99 and print the list:

lst = [1, 2, 3, 4]

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4) List Length

Create a list of 7 items and print its length using len().

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5) Append to List

Start with:

fruits = ["apple", "banana"]

Add "cherry" using append() and print.

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6) Insert into List

Insert "orange" at index 1 in:

fruits = ["apple", "banana"]

Print the updated list.

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7) Remove an Item

Remove "apple" from:

fruits = ["apple", "banana", "cherry"]

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8) Pop an Item

Create:

lst = [5, 10, 15, 20]

Remove the last item using pop() and print it.

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9) Clear a List

Create a list and clear all items using clear().

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10) Sum of Numbers

Create a list of numbers and print the sum of its items using a loop.

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11) Max & Min

Create a numeric list and print its maximum and minimum using max() and min().

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12) Slice a List

Given:

lst = [1,2,3,4,5,6,7]

Print lst[1:5] and lst[:3].

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13) List of Squares

Use a loop to create a list of squares from 1 to 10.

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14) Count Occurrences

Create a list with repeating values and use count() to count how many times a value appears.

Example:

lst = [1,2,2,3,2]

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15) Join Two Lists

Combine:

a = [1, 2]
b = [3, 4]

into one list and print.

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16) Check Membership

Ask user for a number and check if it’s in a list.

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17) Reverse a List

Reverse a list using reverse().

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18) Sort a List

Create:

nums = [4, 2, 9, 1]

Sort it in ascending order and print.

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19) Loop with Index

Loop through a list and print:

Index <i> = <value>

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20) Nested List Access

Given:

nested = [1, [2, 3], 4]

Print the value 3.

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📝 Tips for Students

• Use built-in functions: len(), append(), insert(), remove(), pop(), count(), sort(), reverse().

• Access list items using indexes starting at 0.

• For slicing:

  list[start:end]

  returns items from start up to but not including end.

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canvil: 333f6c7d-6876-4f7e-b6ad-1bdb2233f5c1