Python dictionary with keys having multiple inputs

Prerequisite : Python-Dictionary.

How to create a dictionary where a key is formed using inputs?
Let us consider an example where have an equation for three input variables, x, y and z. We want to store values of equation for different input triplets.

Example 1:

# Python code to demonstrate a dictionary # with multiple inputs in a key. import random as rn    # creating an empty dictionary dict = {}    # Insert first triplet in dictionary x, y, z = 10, 20, 30 dict[x, y, z] = x + y - z;    # Insert second triplet in dictionary x, y, z = 5, 2, 4 dict[x, y, z] = x + y - z;    # print the dictionary print(dict)

Example 2: Let’s get access to the keys.
Let us consider a dictionary where longitude and latitude are the keys and the place to which they belong to is the value.

# dictionary containing longitude and latitude of places places = {("19.07'53.2", "72.54'51.0"):"Mumbai", \           ("28.33'34.1", "77.06'16.6"):"Delhi"}    print(places) print('\n')    # Traversing dictionary with multi-keys and crearing # different lists from it lat = [] long = [] plc = [] for i in places:     lat.append(i[0])     long.append(i[1])     plc.append(places[i[0], i[1]])    print(lat) print(long) print(plc)

Now that the keys(latitude, longitude) and values(place) are stored in a list, we can access it easily.