Python Examples
Convert IP to Integer and Integer To IP in Python How to Get IPv4/IPv6 Address Range from CIDR in Python? Compare Two Objects For Equality in Python How to find Duplicate Elements from a List in Python Convert Timestamp to datetime in Python Convert datetime to Timestamp in Python Generate Random String of Specific Length in Python Encryption and Decryption of Strings in Python The string module in Python Convert string to bytes in Python Convert bytes to string in Python Convert string to datetime and datetime to string in Python Call a function Asynchronously from within a Loop and wait for the Results in Python Remove Duplicate Elements from a List in Python Caching in Python with Examples How to Bulk Insert and Retrieve Data from Redis in Python How to Write Unit Test in Python Read and Write CSV Files in Python Read and Write Data to a Text File in Python How to Convert CSV to JSON in Python Create ICS Calendar File in Python Install Python on Windows 10/11 Install Python on Ubuntu 20.04 or 22.04.3 Python - Install Virtual Environment How to Find a Specific Field Value from a JSON list in Python Download and Unzip a Zipped File in Python Python Install PIP Python Install Virtual Environment How to Fix Python Error: string argument without an encoding Compare Two JSON files in Python How to Hash a Dictionary Object in Python? Create a Digital Clock in Python Create Multiple URLs Using Each Path of a URL in Python Send an Email with Multiple Attachments using Amazon SES in Python SQLAlchemy Query Examples for Effective Database Management SQLAlchemy Query to Find IP Addresses from an IP Range in Bulk How to Create and Use Configuration files in a Python Project Check if a Value Already Exists in a List of Dictionary Objects in Python How to Split Large Files by size in Python? Fixing - Running Scripts is Disabled on this System Error on Windows Generating QR Codes in Python Reading QR Codes in Python

How to Hash a Dictionary Object in Python?

  • Last updated Apr 25, 2024

In Python, a dictionary is a data structure that allows you to store and retrieve key-value pairs efficiently. Sometimes, you may need to hash a dictionary object for various reasons, such as ensuring data integrity or creating unique identifiers. This tutorial will guide you on how to hash a dictionary object in Python.

Hashing is a process that takes an input or key and returns a fixed-length string of characters, which is typically a hash code or hash value. This hash code is generated using a hash function, which is designed to produce a unique output for different inputs. The fundamental purpose of hashing is to quickly and efficiently look up values in data structures like dictionaries, sets, or databases.

Using the hashlib.md5() Function

In Python, you can use the built-in hashlib.md5() function to generate a hash value for various objects, including dictionaries. The hash() function calculates a hash value based on the dictionary's contents.

Here's a basic example of how to use the hashlib.md5() function with a dictionary:

import hashlib
import json

item = {"name":"abc", "email":"", "id":"22"}
result = hashlib.md5(json.dumps(item, sort_keys=True).encode('utf-8'))
hash_value = result.hexdigest()

print("Dictionary hash value = ", hash_value)

The code essentially converts the dictionary to a JSON string, encodes it as bytes, and then calculates the MD5 hash of that representation, which can be used for various purposes such as data integrity checks or generating unique identifiers for the dictionary.

The output of the above code is as follows:

Dictionary hash value =  301231800c907fb2eabbc5c5d7f48a41