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:
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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 dictionaryini_list = [{'a':[1, 2, 3], 'b':[4, 5, 6]}, {'c':[7, 8, 9], 'd':[10, 11, 12]}] # converting to list of tuplestemp_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 resultprint ("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 dictionaryini_list = [{'a':[1, 2, 3], 'b':[4, 5, 6]}, {'c':[7, 8, 9], 'd':[10, 11, 12]}] # converting to list of tuplesdict_list = [(key, )+tuple(val) for dic in ini_list for key, val in dic.items()] # printing resultprint ("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)]
