Python - Q&A

Python - Dictionary of Dictionaries

A dictionary can be created inside a dictionary, which is also called nested dictionary or dictionary of dictionaries. The below mentioned program describes two ways for creating nested dictionary.

Info = {
 "person1": {
    "name": "John",
    "age": 25,
    "city": "London"
  },
 "person2": {
    "name": "Marry",
    "age": 20,
    "city": "Newyork"
  },
 "person3": {
    "name": "Sam",
    "age": 30,
    "city": "Paris"
  }
}
print(Info["person2"])

The output of the above code will be:

{'name': 'Marry', 'age': 20, 'city': 'Newyork'}

The inner dictionaries can be created outside and combined later with the outer dictionary.

person1 = {
  "name": "John",
  "age": 25,
  "city": "London"
}
person2 = {
  "name": "Marry",
  "age": 20,
  "city": "Newyork"
}
person3 = {
  "name": "Sam",
  "age": 30,
  "city": "Paris"
}
Info = {
	"person1": person1,
	"person2": person2,
	"person3": person3
}
print(Info["person2"])

The output of the above code will be:

{'name': 'Marry', 'age': 20, 'city': 'Newyork'}