December 18, 2022

Exploring Ethereum Python Implementation for Dapp Development

Table of Contents

If you are Python proficient and want to transition into Web3 development, exploring Ethereum Python implementation should be your first step. After all, Ethereum remains the leading development blockchain, and many other programmable blockchains follow Ethereum’s lead by being EVM-compatible. So, by learning how to implement Ethereum using Python, you can create dapps on Ethereum and other EVM-compatible chains. Of course, there are several ways to go about this. But unfortunately, many of the available methods of completing Ethereum Python implementation are tedious and tricky. However, when using Moralis, this is not the case!

When building dapps, the path of least resistance is using Moralis. With its cross-platform compatibility supporting all leading programming languages, frameworks, and dev platforms and its cross-chain interoperability supporting all leading blockchain networks, Moralis is the tool bridging the Web2 and Web3 development gap. Not only do all of these advantages combined with Moralis’ enterprise-grade Web3 APIs result in an extremely straightforward process for Ethereum Python implementation, but it also makes the entire development process feel like a breeze!

Moving forward, we’ll first do an overview of the “Python for Ethereum development” topic. Next, we’ll explain why you can and should use Python for blockchain development. Then, we’ll focus on exploring Python and Web3 py. There, you’ll also learn whether or not you can write smart contracts in Python. Last but not least, we’ll take on a backend dapp tutorial to teach you how to properly tackle Ethereum Python implementation.

chain connecting ethereum and python

Python for Ethereum Development

Moralis offers the most seamless Web3 development experience with Python. So, to understand what doors open to you when you use Python for Ethereum development, you need to know more about Moralis. 

Moralis focuses on offering fast and efficient enterprise-grade Web3 APIs that are simple to use. In line with the above-mentioned cross-platform interoperability, Moralis offers many SDKs to enable legacy devs to help create a user-friendly Web3 ecosystem the easy way. As a result, with Moralis on your side, you can use JavaScript, Python, or any other language to unlock the power of blockchain technology. With this power on your side, you get to build sophisticated decentralized applications (dapps)!

You can also find the Moralis Python SDK among the prominent features of Moralis. The latter is the key to efficient and seamless Ethereum Python implementation. Moreover, it is your gateway to blockchain-related Python development. 

wizard pointing at moralis

By using Moralis’ Python SDK, you get your hands on the most impressive Web3 API fleet – the EVM API, NFT API, Token API, Web3 Auth API, Streams API, and Solana API. These APIs enable you to fetch any sort of on-chain data with single lines of code. Furthermore, since Moralis is also all about cross-chain interoperability, you get to target all the leading programmable chains. Hence, you can create multi-chain dapps or switch to any of the supported networks at any time by simply tweaking one line of code. This also future-proofs your work as you are never stuck to any particular network.

All in all, once you’ve set Ethereum Python implementation in place, you get to use Python to do all of the following and much more:   

  • Get native balances
  • Fetch token balances
  • Acquire NFTs from a collection or a wallet
  • Get NFT metadata
  • Implement Web3 authentication
  • Listen to the blockchain 
moralis plus ethereum and python equals easy implementation

Can You Use Python for Ethereum?

If you read the above sections, you know that thanks to Moralis, you can use Python for the Ethereum network. Not only can you use this popular programming language for the leading programmable chains, but you can use it with other EVM-compatible chains and even Solana. 

Essentially, you just need to create your free Moralis account to access your Web3 API key. With that key, you are ready to complete the Ethereum Python implementation (details in the tutorial below). Moreover, you can look at Moralis’ Python software development kit as the ultimate Web3 py tool. A tool that empowers you to create sophisticated Python blockchain projects. 

moralis releases python sdk announcement

Why Use Python for Ethereum Development?

So, why focus on Ethereum development? The first thing you need to remember is that Ethereum development is at the core of Web3 development, and all tech experts agree that Web3 is the future that offers countless opportunities. That said, by diving into Ethereum development now, you’re early in the game and can be part of the new Web3 era! Now, when it comes to using Python for that purpose, the most obvious “why” for you is the fact that you may already know Python. After all, the best programming language to start with is definitely the one you already know. However, if you are a complete beginner and don’t know any programming language yet, Python still deserves your attention. 

With that said, we should explore the main benefits of this programming language. So, when it comes to Web3 development, Python offers the following three noteworthy advantages. 

  • Easy to Learn – Most developers with any Python experience agree that it is an intuitive programming language that’s easy to learn. Hence, you can reach a point where even as an inexperienced developer, you can start contributing to the blockchain ecosystem fast. 
  • Compiled or Uncompiled – Python is a scripted language. Thus, you don’t need to compile it for machines to understand it. The fact that you can use it compiled or uncompiled simplifies Web3 developers’ lives. 
  • Free Packages and Libraries – Python’s free packages and libraries are another reason you may want to add Ethereum Python implementation. The latter enables devs to easily write Web3-compatible code with Python. 

Aside from the above-listed benefits, there are many other pros to using Python for Web3 development. We leave it up to you to discover them. However, let’s explore Python and Web3 py to assist you a little further!

python logo on top of a code editor

Exploring Python and Web3 Py

We’ve already mentioned that Python is one of the most popular programming languages. Thanks to its intuitive design and ease of use, developers use it worldwide. Furthermore, Python is popular among both new and more experienced developers. The fact that this programming language is categorized as “general-purposed” gives it a very broad utility. This means you can use Python for everything from machine learning to creating straightforward applications. If fact, let’s list the most common Python utility examples:

  • Web development
  • Data science
  • Game development
  • Security testing
  • Computer graphics

The broad range of use cases is possible thanks to Python’s flexibility – another of Python’s most outstanding benefits. This means that learning this programming language may serve you for all sorts of Web2 and Web3 applications. All in all, Python is a high-level, object-oriented programming language. It has an easy-to-learn syntax emphasizing readability, which simplifies things for beginners. 

However, if your main goal is to use Python for Web3 development, you ought to learn about Web3 py. So, what is Web3 py? Web3 py or “” is a Python-based library that enables you to interact with the Ethereum blockchain without breaking a sweat. Nonetheless, for Web3 py development, you might also want to explore some tools that can make your life as a blockchain developer easier. That said, you’ve already learned that the simplest way to use Web3 py is via Moralis’ Python SDK. 

side by side documentation pages for ethereum python implementation

If you are interested in exploring Python and the library further, make sure to visit the appropriate documentation. However, we believe you can learn the most by rolling up your sleeves and tackling some example projects, such as the one you can find in our Web3 py tutorial.

Can You Write Ethereum Smart Contracts in Python?

When it comes to writing Ethereum or other EVM-compatible smart contracts, Solidity is the programming language to use. Another – a lot less popular – option is Vyper. As such, the answer to the above question is “no”; you cannot write Ethereum smart contracts in Python. However, thanks to the library and tools such as Moralis, it is actually possible to listen to and interact with smart contracts in Python. That can get you extremely far in dapp development. After all, you can create all sorts of dapps without actually creating your smart contract. 

grey background with vyper and solidity logos next to each other

With that said, it’s time we show you how to tackle Ethereum Python implementation with Moralis. In the tutorial below, you’ll learn to set up a server-side dapp capable of querying all sorts of on-chain data. Furthermore, it enables you to fetch NFTs, tokens, balances, transfers, transactions, and more from any Python application using the right Web3 API endpoints. What’s more, you get to do that across all supported chains.    

Dapp Development Tutorial: Ethereum Python Implementation

To complete this tutorial, you’ll need a code editor (of your choice), a Moralis account, and Python 3 installed. So, in case you haven’t done so yet, create your free Moralis account now. Simply enter your name and email address, create a password, check the terms and conditions, and hit the “Sign Up” button:

sign up landing page

Moreover, do not forget to confirm your account by clicking the confirmation link that will arrive in your inbox. With your account ready, you’ll be able to access your admin area. From there, you’ll get to obtain your Web3 API key in the following two steps:

web3 api landing page and ethereum python implementation key

For now, hold on to that key and move on to installing Moralis’ Python SDK. Fortunately, you just need to enter a simple command (see below) to cover this step.

pip install moralis

With Moralis in place, you have various options for utilizing it with Python. However, the following code does the trick of importing Moralis, enabling you to paste in the above-copied key, and call an example API:

import moralis


By looking at the lines of code above, odds are you already know you must replace the “YOUR_API_KEY” placeholder with your Moralis Web3 API key. 

Note: When you tackle your own Python dapps, we recommend using a “.env” file to store your API key and other environmental variables.

Now that you know how to handle the basics and complete Ethereum Python implementation, let’s fetch some on-chain data.  

hologram showing the letters nft

Fetching On-Chain NFT Data with Python

You can query all sorts of on-chain data with a reliable Web3 API. However, since NFTs continue to be one of the most popular blockchain use cases, let’s show you how to get NFT collections using Python. So, here’s an example script that fetches all NFT collections owned by an address:

from moralis import evm_api

api_key = "YOUR_API_KEY"
params = {
    "address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045", 
    "chain": "eth", 
    "limit": 100, 
    "cursor": "", 

result = evm_api.nft.get_wallet_nft_collections(


Looking at the code above, you can see that at the top, it imports Moralis and asks you to provide your Web3 API key. That is the part that takes care of Ethereum Python implementation. Next, the script covers the “get_wallet_nft_collections” endpoint parameters. Then, the code calls the “evm_api.nft.get_wallet_nft_collections” method using the above-defined API key and parameters. Finally, it uses “print” to display the results in the terminal. 

Note: We recommend visiting our Web3 Python SDK documentation to copy the above-presented lines of code. After all, the docs regularly update all example scripts. Moreover, this is also the place to get the snippets of code required to fetch any on-chain data. 

cube with code blocks implementing the ethereum network using python

Exploring Ethereum Python Implementation for Dapp Development – Summary

We’ve covered quite a distance in today’s article. We first made sure you all knew what Python for Ethereum development is all about. This is where we answered questions such as “can you use Python for Ethereum?” and “why use Python for Ethereum development?”. We also explored Python and Web3 py to ensure you all understood the basics of this popular programming language and its library that focuses on Web3 development. Nonetheless, we even explore the two dev languages used to create smart contracts on Ethereum. Last but not least, we took on a simple tutorial showcasing how to go about Ethereum Python implementation with Moralis. 

If you enjoyed today’s article and want to dive deeper into Python Web3 development, make sure to explore other examples via the above-linked documentation page. We also encourage you to learn how to set up automated Web3 notification emails with Python

On the other hand, you might be interested in exploring other blockchain development topics. In that case, visit the Moralis YouTube channel and our crypto blog. Some of the latest topics include an ethers.js tutorial, using an Ethereum Web3 API, a tutorial on how to get all transfers of an NFT, and more. Nonetheless, if you want to go full-time crypto sooner rather than later, we recommend becoming blockchain certified. The best way to do so is by enrolling in Moralis Academy. Of course, there are many blockchain development courses waiting for you there; however, we encourage you to start with blockchain and Bitcoin fundamentals.  

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