Get a dictionary from an Objects Fields in python

Get a dictionary from an Objects Fields in python

If you want to get a dictionary representation of an object's fields in Python, you can create a custom method for that object or utilize some built-in Python functions and techniques. Here's how to do it:

  1. Custom Method:

    Let's say you have a class Person and you want to retrieve its attributes as a dictionary:

    class Person: def __init__(self, name, age, city): self.name = name self.age = age self.city = city def to_dict(self): return { 'name': self.name, 'age': self.age, 'city': self.city } p = Person("John", 30, "New York") print(p.to_dict())

  2. Using vars() or __dict__:

    The vars() function or the __dict__ attribute can be used to get the __dict__ attribute of an object, which is a dictionary of the object's attributes.

    class Person: def __init__(self, name, age, city): self.name = name self.age = age self.city = city p = Person("John", 30, "New York") print(vars(p)) # OR print(p.__dict__)

  3. For More Complex Cases:

    If you have complex objects with nested objects and you want to serialize them, consider using libraries like dataclasses.asdict() (for dataclasses) or third-party libraries like marshmallow which offer more advanced serialization options.

Note: Using vars() or __dict__ will also fetch any other non-data attributes and methods (if they are stored in the object's __dict__). You may want to filter the results if necessary. The custom method approach allows you to precisely specify which fields you want to include in the dictionary.

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