diff --git a/blockchain_integration/pi_network/smart_contract.py b/blockchain_integration/pi_network/smart_contract.py
index 93754b330..fac3835d4 100644
--- a/blockchain_integration/pi_network/smart_contract.py
+++ b/blockchain_integration/pi_network/smart_contract.py
@@ -1,8 +1,11 @@
 import web3
 
+
 class SmartContract:
     def __init__(self, contract_address, abi):
-        self.web3 = web3.Web3(web3.providers.HttpProvider("https://mainnet.infura.io/v3/YOUR_PROJECT_ID"))
+        self.web3 = web3.Web3(
+            web3.providers.HttpProvider("https://mainnet.infura.io/v3/YOUR_PROJECT_ID")
+        )
         self.contract = self.web3.eth.contract(address=contract_address, abi=abi)
 
     def execute_transaction(self, from_address, to_address, value):