When it is required to order the tuples using an external list, the list comprehension, and ‘dict’ method can be used.
Below is the demonstration of the same −
Example
my_list = [('Mark', 34), ('Will', 91), ('Rob', 23)]
print("The list of tuple is : ")
print(my_list)
ordered_list = ['Will', 'Mark', 'Rob']
print("The ordered list is :")
print(ordered_list)
temp = dict(my_list)
my_result = [(key, temp[key]) for key in ordered_list]
print("The ordered tuple list is : ")
print(my_result)Output
The list of tuple is :
[('Mark', 34), ('Will', 91), ('Rob', 23)]
The ordered list is :
['Will', 'Mark', 'Rob']
The ordered tuple list is :
[('Will', 91), ('Mark', 34), ('Rob', 23)]Explanation
The list of tuple is defined, and is displayed on the console.
Another list is defined, and is displayed on the console.
The list of tuple is converted into a dictionary.
It is iterated over and the elements are stored in another list.
This results in an ordered tuple which is displayed as output on the console.