Python | Convert List of Dictionary to Tuple list
Given a list of dictionaries, write a python code to convert list of dictionary into list if tuples.
Examples:
Input: [{'a':[1, 2, 3], 'b':[4, 5, 6]}, {'c':[7, 8, 9], 'd':[10, 11, 12]}] Output: [('b', 4, 5, 6), ('a', 1, 2, 3), ('d', 10, 11, 12), ('c', 7, 8, 9)] Input: [{'a':['America', 'Australia'], 'b':['Bhutan', 'Bhopal']}, {'c':['Canada', 'California'], 'd':['Denmark', 'Delhi']}] Output: [('a', 'America', 'Australia'), ('b', 'Bhutan', 'Bhopal'), ('c', 'Canada', 'California'), ('d', 'Denmark', 'Delhi')]
Below are various methods to convert list of dictionaries to list of tuples.
Method #1: Using Naive Approach
# Python code to demonstrate # converting list of dictionary to list of tuples # initialising list of dictionary ini_list = [{ 'a' :[ 1 , 2 , 3 ], 'b' :[ 4 , 5 , 6 ]}, { 'c' :[ 7 , 8 , 9 ], 'd' :[ 10 , 11 , 12 ]}] # converting to list of tuples temp_dict = {} result = [] for ini_dict in ini_list: for key in ini_dict.keys(): if key in temp_dict: temp_dict[key] + = ini_dict[key] else : temp_dict[key] = ini_dict[key] for key in temp_dict.keys(): result.append( tuple ([key] + temp_dict[key])) # printing result print ( "Resultant list of tuples: {}" . format (result)) |
Output:
Resultant list of tuples: [('a', 1, 2, 3), ('d', 10, 11, 12), ('b', 4, 5, 6), ('c', 7, 8, 9)]
Method #2: Using list comprehension
# Python code to demonstrate # converting list of dictionary to list of tuples # initialising list of dictionary ini_list = [{ 'a' :[ 1 , 2 , 3 ], 'b' :[ 4 , 5 , 6 ]}, { 'c' :[ 7 , 8 , 9 ], 'd' :[ 10 , 11 , 12 ]}] # converting to list of tuples dict_list = [(key, ) + tuple (val) for dic in ini_list for key, val in dic.items()] # printing result print ( "Resultant list of tuples: {}" . format (dict_list)) |
Output:
Resultant list of tuples: [('b', 4, 5, 6), ('a', 1, 2, 3), ('d', 10, 11, 12), ('c', 7, 8, 9)]
Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.
To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course.