Ethereum: Solidity smart contract not compiling using python

Ethereum Smart Contracts Compilation Error: Solc Version 0.15.1

The issue you are facing is likely due to an outdated Solidity version in your solcx library, which may be incompatible with the latest Ethereum Smart Contract compilation tools. Here is a step-by-step solution to fix this error:

Prerequisites

Make sure you have installed solicx and solc using pip:

pip install solcx

Make sure Solidity version 0.8.10 or higher is used with solicx.

If you are still using an older version of Solidity, upgrade to the latest version available.

Solution

Update solc version

: Run the following command in your terminal or command prompt:

solc --version

This should show the current version of solc. Update it to 0.15.1 if necessary.

Install new Solidity version using solicx:

To use a newer version of Solidity (e.g. 0.8.10), you can install it using pip:


pip install solcx[solidity]

This command will automatically update your solc installation to the latest compatible version.

Check compilation files: After installing solicx, recompile your Solidity contract files:


from web3 import Web3, HTTPProvider





Replace with your Ethereum network provider
provider = HTTPProvider('

Create a new Web3 instance
web3 = Web3(provider)

Compile the smart contract file with solc
compile_files(['path/to/your/smart_contract.sol'], provider, output_dir='path/to/output/directory')

Replace YOUR_PROJECT_ID with your actual Infura project ID.

Usage example

Here is a simple example of how you can use the compiled contract files to deploy the smart contract:



Import the required modules and variables
from web3 import Web3, HTTPProvider
import os

Replace with your Ethereum network provider
provider = HTTPProvider('

Create a new Web3 instance
web3 = Web3(provider)

Compile the smart contract file using solc
compile_files(['path/to/your/smart_contract.sol'], provider, output_dir='path/to/output/directory')

Deploy the smart contract to the Ethereum network
contract_address = web3.eth.contract(address=os.path.join(os.getcwd(), 'output/', 'Path/to/ContractAddress'))
deploy_tx = contract_address.functions('YourSmartContract Function').call()

Make sure to replace YOUR_PROJECT_ID with your actual Infura project ID and Path/to/Your/Smart_Contract.sol, Path/to/ContractAddress and YourSmartContract Function with the correct values for your smart contract.

Troubleshooting tips