Let us see how to convert a given nested dictionary into an object
Method 1 : Using the json module. We can solve this particular problem by importing the json module and use a custom object hook in the json.loads() method.
python3
# importing the moduleimport json # declaringa a classclass obj: # constructor def __init__(self, dict1): self.__dict__.update(dict1) def dict2obj(dict1): # using json.loads method and passing json.dumps # method and custom object hook as arguments return json.loads(json.dumps(dict1), object_hook=obj) # initializing the dictionary dictionary = {'A': 1, 'B': {'C': 2}, 'D': ['E', {'F': 3}],'G':4} # calling the function dict2obj and# passing the dictionary as argumentobj1 = dict2obj(dictionary) # accessing the dictionary as an objectprint (obj1.A)print(obj1.B.C)print(obj1.D[0])print(obj1.D[1].F)print(obj1.G) |
Output
1 2 E 3 4
Time complexity: O(n), where n is the total number of elements in the input dictionary.
Auxiliary space: O(n), where n is the total number of elements in the input dictionary
Method 2: Using the isinstance() method
We can solve this particular problem by using the isinstance() method which is used to check whether an object is an instance of a particular class or not.
Python3
def dict2obj(d): # checking whether object d is a # instance of class list if isinstance(d, list): d = [dict2obj(x) for x in d] # if d is not a instance of dict then # directly object is returned if not isinstance(d, dict): return d # declaring a class class C: pass # constructor of the class passed to obj obj = C() for k in d: obj.__dict__[k] = dict2obj(d[k]) return obj# initializing the dictionary dictionary = {'A': 1, 'B': {'C': 2}, 'D': ['E', {'F': 3}],'G':4}# calling the function dict2obj and# passing the dictionary as argument obj2 = dict2obj(dictionary)# accessing the dictionary as an object print(obj2.A)print(obj2.B.C)print(obj2.D[0])print(obj2.D[1].F)print(obj2.G) |
Output
1 2 E 3 4
