Question

1. Write python program to print list item by passing index number.

2. Write a program that show following arithmetic operators.​

PLEASE EXPLAIN WITH : [ REQUIREMENTS, CODING, EXAMPLE ETC. ]​

Answer 1

Answer:

Python List index()

index() is an inbuilt function in Python, which searches for a given element from the start of the list and returns the lowest index where the element appears.

Syntax:

list_name.index(element, start, end)

Parameters:

element – The element whose lowest index will be returned.

start (Optional) – The position from where the search begins.

end (Optional) – The position from where the search ends.

Returns:

Returns the lowest index where the element appears.

Error:

If any element which is not present is searched, it returns a ValueError

Example 1: Find the index of the element

# Python3 program for demonstration

# of list index() method

list1 = [1, 2, 3, 4, 1, 1, 1, 4, 5]

# Will print the index of '4' in list1

print(list1.index(4))

list2 = ['cat', 'bat', 'mat', 'cat', 'pet']

# Will print the index of 'cat' in list2

print(list2.index('cat'))

Output:

3

0

Example 1.1

# Python3 program for demonstration

# of index() method

list1 = [1, 2, 3, 4, 1, 1, 1, 4, 5]

# Will print index of '4' in sublist

# having index from 4 to 8.

print(list1.index(4, 4, 8))

# Will print index of '1' in sublist

# having index from 1 to 7.

print(list1.index(1, 1, 7))

list2 = ['cat', 'bat', 'mat', 'cat',

'get', 'cat', 'sat', 'pet']

# Will print index of 'cat' in sublist

# having index from 2 to 6

print(list2.index('cat', 2, 6 ))

Output:

7

4

3

Example 1.2

# Python3 program for demonstration

# of list index() method

# Random list having sublist and tuple also

list1 = [1, 2, 3, [9, 8, 7], ('cat', 'bat')]

# Will print the index of sublist [9, 8, 7]

print(list1.index([9, 8, 7]))

# Will print the index of tuple

# ('cat', 'bat') inside list

print(list1.index(('cat', 'bat')))

Answer 2

Answer:

1. Write python program to print list item by passing index number.

example list - this below list is just for example, you can make your own list

lst = [12, 23, 34]

To get a list item by passing index number I am making a function that will have an argument, index number

def func(index_number):

   return lst[index_number]

   

Use example

print(func(index_number=0))

Output --> 12    

2. Write a program that show following arithmetic operators.​

Sorry, the question isn't clear, because you haven't mentioned any arithmetic operators.