Python search list of tuples by first element
In thisPython tutorial, we will learn about thePython sort list of tuples. Also, we will discuss: Show
How to sort list of tuples in Python? In Python, we can use the sort() method to sort the elements in the ascending order, and by default, it will sort the first element. Python sort list of tuples
By using list.sort() function
Example: Now, lets take an example and check how to sort the list of tuples new_list = [('john', 6), ('Micheal', 9), ('George', 2), ('steve', 19)] new_list.sort(key=lambda y: y[1]) print(new_list)In the above code, we have to sort the tuples based on the second element. Here is the output of the following given code Python sort list of tuples By using bubble sort algorithm
Example: new_list = [('Germany',120), ('France',110) , ('England',40) , ('Japan',184), ('China',20)] new_ele = 0 new_lis_len = len(new_list) for k in range(0, new_lis_len): for l in range(0, new_lis_len-k-1): if (new_list[l][new_ele] > new_list[l + 1][new_ele]): new_tem = new_list[l] new_list[l]= new_list[l + 1] new_list[l + 1]= new_tem print(new_list)Note: In the above code, the new_ele variable specifies the index position. In this case, we can use the first element to sort the list of tuples. Here is the execution of the following given code Python sort list of tuples bubble sort Read Python concatenate tuples with examples By using sorted() function
Example: new_list = [(2,6,9),(0,9,7),(1,7,6),(9,1,2)] b = sorted(new_list) print(b)Output: Python sort list of the tuple using sorted This is how to sort a list of tuples in Python. Python sort list of tuplesThe sort() method is used to sort the elements in ascending order and by default, it will sort the first element. If two tuples have the same first element then it will sort them according to the second element. Example: roll_list1 = [('Jack', 76), ('Beneth', 78), ('Cirus', 77), ('Faiz', 79)] roll_list1.sort() print(roll_list1)After writing the above code (python sort lists of tuples), Ones you will printroll_list1then the output will appear as a [(Beneth, 78), (Cirus, 77), (Faiz, 79), (Jack, 76)] . Here, sort() method is used to sort the elements in ascending order and it will be sorted by its first element. You can refer to the below screenshot for creating python sort lists of tuples. Python sort list of tuples Read Python convert tuple to list Python sort list of tuples by second elementLet us see another example, python sort list of tuples by second element. In python, if you want to sort a list of tuples by the second element then we have the function called sort() and by using lambda function as a key function. A custom comparator is a key function in sort(). Example: roll_list1 = [('Jack', 76), ('Beneth', 78), ('Cirus', 77), ('Faiz', 79)] roll_list1.sort(key=lambda a: a[1]) print(roll_list1)After writing the above code (python sort list of tuples by the second element), Ones you will printroll_list1then the output will appear as a [(Jack, 76), (Cirus, 77), (Beneth, 78), (Faiz, 79)] . Here, sort() method is used to sort the elements in ascending order and the list of tuples will be sorted by its second element. Check the screenshot on python sort list of tuples by second element. Python sort list of tuples by second element This is how to sort list of tuples by the second element in Python. Python sort list of tuples by first element descendingIn python, to sort list of tuples by the first element in descending order, we have to use the sort() method with the parameter (reverse=True) which will sort the elements in descending order. Example: roll_list1 = [('Jack', 76), ('Beneth', 78), ('Cirus', 77), ('Faiz', 79)] roll_list1.sort(reverse=True) print(roll_list1)After writing the above code (python sort list of tuples by first element descending), Ones you will printroll_list1then the output will appear as a [ (Jack, 76), (Faiz, 79), (Cirus, 77), (Beneth, 78)] . Here, sort() method is used with the parameter as (reverse= True) to sort the elements in descending order and it will be sorted by its first element. Check the screenshot. Python sort list of tuples by first element descending This is how to sort list of tuples by the first element descending order. Read Python dictionary initialize Complete tutorial Python sort list of tuples by lengthIn python, to sort list of tuples by length, we have the sort() method and the parameter should be pass to get the length of the first element. Example: roll_list1 = [('Jack', 76), ('Beneth', 78), ('Cirus', 77), ('sid', 79)] roll_list1.sort(key=lambda a: len(a[0])) print(roll_list1)After writing the above code (python sort list of tuples by length), Ones you will printroll_list1then the output will appear as a [(Sid, 79), (Jack, 76), (Cirus, 77), (Beneth, 78)] . Here, sort() method is used with the parameter, and the length is calculated and the element is sorted in ascending order by its first element. You can refer to the below screenshot for the python sort list of tuples by length. Python sort list of tuples by length The above Python code you can use to sort list of tuples by length. Read Add string to list Python + Examples Python sort list of tuples descending
Example: Lets take an example and check how to sort the list in descending order by using the reverse argument my_list = [('z',80),('f',90),('g',84),('d',92),('a',96)] my_list.sort(key=lambda i:i[1],reverse=True) print(my_list)Here is the Screenshot of the following given code Python sort list of tuples descending This is how to sort list of tuples in descending order in Python. Python sort list of tuples by last element
Example: new_lis=[(4, 2), (7, 8), (3, 1)] las_ele = sorted(new_lis, key=lambda i: i[-1]) print (las_ele)Here is the execution of the following given code Python sort list of tuples by the last element This is an example of Python sort list of tuples by last element. Read Python concatenate list with examples How to sort list of tuple by last element in PythonUsing the bubble sort algorithm, we can easily access the last element of each tuple and use nested loops to perform this particular task. Here is the Source code def my_list(las_ele): end = len(las_ele) for o in range(0, end): for p in range(0, end-o-1): if (las_ele[p][-1] > las_ele[p + 1][-1]): new_temp = las_ele[p] las_ele[p]= las_ele[p + 1] las_ele[p + 1]= new_temp return las_ele las_ele =[(9, 6), (8, 3), (4, 1)] print(my_list(las_ele))In this example first, we will define a function and pass list as an argument that returns the last element of each tuple. Here is the output of the following given code Python sort list of tuples by last element bubble sort This is how to sort list of tuples by last element in Python. Python sort list of tuples by first and second element
Example: my_list = [('b', 4), ('d', 1), ('e', 6), ('m', 2)] my_list.sort(key=lambda s:s[1]) print("First element values:",my_list) my_list.sort(key=lambda i:i[0]) print("Second element values:",my_list)Output: Python sort list of tuples by a first and second element This is how to sort list of tuples by first and second element in Python. Read Check if a list exists in another list Python Python sort list of tuples by multiple elements
Example: Lets take an example and check how to sort the list of tuples by multiple elements my_tup_lis = [(2, 4), (9, 16), (1, 12), (5, 4)] mul_sort = sorted(my_tup_lis, key=lambda t: (t[1], t[0])) print("Multiple elements sorted",mul_sort)Screenshot of the following given code Python sort list of tuples by multiple elements The above code we can use to sort list of tuples by multiple elements in Python. Python sort list of tuples alphabetically
Example: Here is the Source code def alpha_tuple(new_list): new_list.sort(key = lambda a: a[0]) return new_list new_list = [("b", 41), ("u", 46), ("n", 31), ("a", 81), ("m", 92)] print("sorted elements alphabetically:",alpha_tuple(new_list))Here is the execution of the following given code Python sort list of tuples alphabetically The above Python code we can use to sort list of tuples alphabetically. Read Python write a list to CSV How to sort list of tuple alphabetically by using sorted() function in PythonHere is another way to sort list of tuples alphabetically by using the sorted() function in Python. Source Code: new_list = [(2,'z'),(9,'f'),(4,'c'),(6,'b')] b = sorted(new_list, key = lambda u: u[1]) print("sorted alphabetically",b)Output: Python sort list of tuples alphabetically sorted This is how to sort the list of tuples alphabetically in Python. Python sort list of tuples multiple keys
Example: def mul_keys(key): l = len(key) for x in range(l): for y in range(l-x-1): if key[y][0] > key[y + 1][0]: key[y], key[y + 1] = key[y + 1], key[y] return key key = [("Australia"), ("Switzerland"), ("Europe"), ("Paris"), ("Brazil")] print("sorted multiple keys",mul_keys(key))Here is the Screenshot of the following given code Python sort list of tuples multiple keys Read Python list comprehension using if-else Python sort list of tuples by key
Example: Lets take an example and check how to sort the list of tuples by key my_list = [('Lily', 2), ('Rose', 7), ('Jasmine', 4), ('Lotus', 1)] my_list.sort(key=lambda r: r[0]) print(my_list)Check the Screenshot of the following given code Python sort list of tuples by key This is an example of a Python sort list of tuples by key. Python sort list of tuples by first
Example: n_lis = [('p', 34), ('a', 17), ('f', 16), ('i', 12)] n_lis.sort(key=lambda u: u[0]) print(n_lis)Here is the implementation of the following given code Python sort list of tuples by first The above Python code you can use to sort list of tuples by first element in Python. Python program to sort a list of tuples using lambdaIn this example first, we will initialize a list of tuples and sort the list by their second third value in Python. Example: to_lis = [('z', 2, 19), ('b', 2, 24), ('c', 2, 28), ('q', 1, 10), ('p', 1, 19), ('o', 1, 15), ('e', 1, 17)] new_list = sorted(to_lis, key=lambda m: (m[1],-m[2])) print(new_list)Output: Python program to sort a list of tuples using lambda The above code we can use to sort a list of tuples using lambda in Python. Python sort list of tuples by second value descendingIn Python to sort the list of tuples by second values in descending order, we have to use the Python sort() function. Example: new_lis = [('v', 2), ('u', 9), ('q', 10), ('w', 4)] new_lis.sort(key=lambda i:i[1],reverse=True) print("Second element descending order:",new_lis)Here is the implementation of the following given code Python sort list of tuples by second value descending This is how to sort list of tuples by second value in descending order in Python. You may like the following Python tutorials:
In this tutorial, we have discussedhow to sort list of tuples in python. We discussed the Python sort list of tuples with examples.
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