Input a list/tuple of elements and search for a given element in the list/tuple Python Program
# Python Program to input a list of 5 elements and search element in List
mylist = [] print["Enter 5 elements for the list: "] for i in range[5]: value = int[input[]] mylist.append[value] print["Enter an element to be search: "] element = int[input[]] for i in range[5]: if element == mylist[i]: print["\nElement found at Index:", i] print["Element found at Position:", i+1]Output:
Enter 5 elements for the list: 45 34 37 34 55 Enter an element to be search: 34 ['\nElement found at Index:', 1] ['Element found at Position:', 2] ['\nElement found at Index:', 3] ['Element found at Position:', 4] >>>You may also Check :
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Python | Find the tuples containing the given element from a list of tuples
Given a list of tuples, the task is to find all those tuples containing the given element, say n.
Examples:
Input: n = 11, list = [[11, 22], [33, 55], [55, 77], [11, 44]]
Output: [[11, 22], [11, 44]]
Input: n = 3, list = [[14, 3],[23, 41],[33, 62],[1, 3],[3, 3]]
Output: [[14, 3], [1, 3], [3, 3]]
There are multiple ways we can find the tuples containing the given element from a list of tuples. Let’s see some of Pythonic ways to do this task.
Method #2: Using list comprehension. It works only when there are fixed number of elements in every list. For example 2 elements in below code.
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# Python code to find the tuples containing
# the given element from a list of tuples
# List of tuples
Input = [[14, 3],[23, 41],[33, 62],[1, 3],[3, 3]]
# Find an element in list of tuples.
Output = [item for item in Input
if item[0] == 3 or item[1] == 3]
# printing output
print[Output]
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Method #1 : Using filter In this solution, there can be variable number of nodes in lists.
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# Python code to find the tuples containing
# the given element from a list of tuples
# List of tuples
Input = [[11, 22], [33, 55], [55, 77],
[11, 44], [33, 22, 100, 11], [99, 11]]
# Using filter
Output = list[filter[lambda x:11 in x, Input]]
# Printing output
print[Output]
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Code:
# Python code to find the tuples containing # the given element from a list of tuples # List of tuples Input = [[14, 3],[23, 41],[33, 62],[1, 3],[3, 3]] # Find an element in list of tuples. Output = [item for item in Input if item[0] == 3 or item[1] == 3] # printing output print[Output]Explanation:
- Here first a list of tuple is entered with list as elements.
- Then the condition is checked whether the first or second one of list is equal to 3.
- If it is equal to 3 then it is presented as output in tuple containing list.
Output:
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Computer Science with Python Practical Book Solutions Class 11 Term -2 – CS Study
Related
Find the tuples containing the given element from a list of tuples in Python
A list can have tuples as its elements. In this article we will learn how to identify those tuples which contain a specific search element which is a string.
Input a List in Python
As you might already know, in order to accept an input from the user in Python, we can make use of the input[] function. When used, it enables the programmer to accept either a string, integer or even a character as an input from the user. But when it comes to accepting a list as an input, the approach we follow is slightly different.
This how to input a List in Python article, will address main areas of concern
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