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# Python dictionary with keys having multiple inputs

• Difficulty Level : Basic
• Last Updated : 26 Nov, 2018

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``)`

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.

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