Python get value from list of tuples

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.

With in and condition

We can design a follow with in condition. After in we can mention the condition or a combination of conditions.

Example

Live Demo

listA = [['Mon', 3], ['Tue', 1], ['Mon', 2], ['Wed', 3]] test_elem = 'Mon' #Given list print["Given list:\n",listA] print["Check value:\n",test_elem] # Uisng for and if res = [item for item in listA if item[0] == test_elem and item[1] >= 2] # printing res print["The tuples satisfying the conditions:\n ",res]

Output

Running the above code gives us the following result

Given list: [['Mon', 3], ['Tue', 1], ['Mon', 2], ['Wed', 3]] Check value: Mon The tuples satisfying the conditions: [['Mon', 3], ['Mon', 2]]

With filter

We use the filter function along with Lambda function. In the filter condition we use the the in operator to check for the presence of the element in the tuple.

Example

Live Demo

listA = [['Mon', 3], ['Tue', 1], ['Mon', 2], ['Wed', 3]] test_elem = 'Mon' #Given list print["Given list:\n",listA] print["Check value:\n",test_elem] # Uisng lambda and in res = list[filter[lambda x:test_elem in x, listA]] # printing res print["The tuples satisfying the conditions:\n ",res]

Output

Running the above code gives us the following result

Given list: [['Mon', 3], ['Tue', 1], ['Mon', 2], ['Wed', 3]] Check value: Mon The tuples satisfying the conditions: [['Mon', 3], ['Mon', 2]]