Ethereum: Solidity smart contract not compiling in python

Poncho Test·February 13, 2025·0 comments

Ethereum Smart Contract Compilation Error: Solc Version 0.15.1

The issue you are experiencing is likely caused by an outdated version of Solidity in your solcx library, which may not be compatible with the latest Ethereum smart contract compilation tools. Here is a step-by-step solution to this error:

Ethereum: Solidity smart contract not compiling in python

Assumptions

  • Make sure you have solicx and solc installed using pip:

pip install solcx

  • Make sure Solidity version 0.8.10 or later is being used withsolicx.
  • If you are still using an older version of Solidity, upgrade to the latest available version.

Solution

  • Update your Solc version: Run the following command in a terminal or command line:

solc --version

This should display the current version of solc'. If necessary, update it to 0.15.1.

  • Install the new version of Solidity withsolicx:

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

pip install solcx[fortress]

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

  • Check your build files: After installing solicx, recompile your Solidity contract files:

from web3 import Web3, HTTPProvider





Change to your provider Ethereum network
provider = HTTPProvider('

Create a new Web3 instance
web3 = Web3(provider)

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

Replace ‘YOUR_PROJECT_ID’ with your current Infura project ID.

Example Use Case

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


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

Exchange for the Ethereum network provider
provider = HTTPProvider('

Create a new Web3 instance
web3 = Web3(provider)

Build the smart contract file using solc
compile_files(['path/to/your/smart_contract.sol'], provider, output_directory='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/contract address'))
deploy_tx = contract_address.functions('YourSmartContractFunction').call()

Make sure to replace YOUR_PROJECT_ID with your current Infura project ID and path/to/your/smart_contract.sol, Path/to/contract_address and YourSmartContractFunction with the correct values ​​for your smart contract.

Troubleshooting Tips

  • If the issues persist, try updating solc to a newer version or reinstalling it.
  • Make sure your Ethereum network provider is up to date and compatible with solicx.
  • Verify that all required dependencies (e.g. web3, solcx) are installed and working properly.

By following these steps, you should be able to resolve the compilation error and successfully deploy your smart contract using the latest tools.

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Poncho

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