How to Iterate over Tuples in Dictionary using Python |
您所在的位置：网站首页 › use for loop to iterate tuple in python › How to Iterate over Tuples in Dictionary using Python |
How to Iterate over Tuples in Dictionary using Python
|
How to Iterate over Tuples in Dictionary using Python
PythonServer Side ProgrammingProgramming
In this article, we will learn how to iterate over the tuples in Dictionary in python. Methods UsedThe following are the various methods used to accomplish this task − Using Indexing Using dictionary.values() Method Using dictionary.items() Method Tuples are an immutable, unordered data type used to store collections in Python. Lists and tuples are similar in many ways, but a list has a variable length and is mutable in comparison to a tuple which has a fixed length and is immutable. Method 1: Using Indexinglen() function − The number of items in an object is returned by the len() method.The len() function returns the number of characters in a string when the object is a string. Algorithm (Steps)Following are the Algorithm/steps to be followed to perform the desired task. − Create a variable to store the input dictionary containing the values as a tuple. Print the whole tuple mapped with the specific key(here 10) of the input dictionary by using the key Traverse through the tuple elements of the dictionary using in operator to print the elements of the tuple mapped with the key of the dictionary one by one. Traverse till the length tuple elements of the dictionary using range() function to print the elements of the tuple mapped with the key of the dictionary. ExampleThe following program iterate over the tuples in the dictionary and prints the elements of each tuple using Indexing − # input dictionary inputDict = {10: ("Hello", "Tutorialspoint", "Python"), 20: ("dhoni", "virat", "pandya", "rohit sharma"), 30: ("this", "is", "a", "dictionary")} print("The Tuple mapped with the key 10 of the dictionary is:"), # printing the whole tuple mapped with the key 10 of the dictionary print(inputDict[10]) print() print("The Tuple mapped with the key 20 of the dictionary is:"), # printing the elements of the tuple mapped with # the key 20 of the dictionary one-by-one using for loop and in operator for i in inputDict[20]: # printing the corresponding element print(i), print() print("The Tuple mapped with the key 30 of the dictionary is:"), # printing the elements of the tuple mapped with # the key 20 of the dictionary one-by-one using for loop and range() for k in range(0, len(inputDict[30])): # accessing the corresponding element print(inputDict[30][k]) OutputOn executing, the above program will generate the following output − The Tuple mapped with the key 10 of the dictionary is: ('Hello', 'Tutorialspoint', 'Python') The Tuple mapped with the key 20 of the dictionary is: dhoni virat pandya rohit sharma The Tuple mapped with the key 30 of the dictionary is: this is a dictionary Method 2: Using values() FunctionUse the dictionary.values() function to traverse through the tuples in a dictionary with the for loop. values() function(the dict.values() method provides a view object that displays a list of all the values in the dictionary in order of insertion) Algorithm (Steps)Following are the Algorithm/steps to be followed to perform the desired task. − Create a variable to store the input dictionary containing the values as a tuple. Use the for loop, to traverse through the values(all tuples) of a dictionary using values() function. Use another nested for loop, to traverse within each tuple again. Print the corresponding element of the tuple ExampleThe following program iterate over the tuples in the dictionary and prints the elements of each tuple using dictionary.values() function − # input dictionary containing the values as a tuple inputDict = {10: ("Hello", "Tutorialspoint", "Python"), 20: ("dhoni", "virat", "pandya", "rohit sharma"), 30: ("this", "is", "a", "dictionary")} # traversing through the values(tuples) of a dictionary using values() function for p in inputDict.values(): # traversing within each tuple again using another nested for loop for q in p: # printing the elements of the corresponding tuple one by one print(q) print(" ") OutputOn executing, the above program will generate the following output − Hello Tutorialspoint Python dhoni virat pandya rohit sharma this is a dictionary Method 3: Using dictionary.items() MethodUse the dictionary.items() function to traverse through the tuples in a dictionary with the for loop. The items() function returns a view object i.e, it contains the key-value pairs of the dictionary, as tuples in a list. Algorithm (Steps)Following are the Algorithm/steps to be followed to perform the desired task. − Create a variable to store the input dictionary containing the values as a tuple. Use the for loop, to traverse through the keys, and values(all tuples) of a dictionary using the items() function. Traverse through all the elements of the tuple using another nested for loop. Print the tuple elements. ExampleThe following program iterate over the tuples in the dictionary and prints the elements of each tuple using dictionary.items() function − # input dictionary containing the values as a tuple inputDict = {10: ("Hello", "Tutorialspoint", "Python"), 20: ("dhoni", "virat", "pandya", "rohit sharma"), 30: ("this", "is", "a", "dictionary")} # traversing through keys,values(tuples) of a dictionary using items() function for key, tuplevalues in inputDict.items(): # traversing within values of each tuple again using another nested for loop for value in tuplevalues: # printing the elements of the corresponding tuple elements one by one print(value) print(" ") OutputOn executing, the above program will generate the following output − Hello Tutorialspoint Python dhoni virat pandya rohit sharma this is a dictionary ConclusionThis article provided us with three different methods for iterating through tuples in the given dictionary. We learned how to use the values() function to get the dictionary's values. Additionally, we learned how to use the items() method to traverse through the dictionary's keys and values. 
Vikram Chiluka
Updated on: 27-Jan-2023 1K+ Views Related ArticlesIterate over a dictionary in Python How to iterate over a C# dictionary? C++ Program to Iterate Over a Dictionary How to iterate through a dictionary in Python? How to iterate over dictionaries using 'for' loops in Python? How to Create a Dictionary Of Tuples in Python How to recursively iterate a nested Python dictionary? What is the best way to iterate over a Dictionary in C#? Iterate over a list in Python Iterate over a set in Python Convert dictionary to list of tuples in Python List of tuples to dictionary conversion in Python Python - Group list of Tuples to Dictionary Python Program to Iterate Over an Array How to iterate over an Array using for loop in Golang? Kickstart Your CareerGet certified by completing the course Get Started
Advertisements
|
【本文地址】