diff --git a/web3toolkit/.env.example b/web3toolkit/.env.example
index 427bb3a..1ebbe09 100644
--- a/web3toolkit/.env.example
+++ b/web3toolkit/.env.example
@@ -52,3 +52,14 @@ CONTRACT_ADDRESS=
 ABI=
 CALLDATA=
 
+
+##############################
+# get_transfer_logs_and_wallets_balance_for_a_token.py
+############################# 
+
+RPC_PROVIDER_URL = https://mainnet.infura.io/v3/<your infura project id>
+CHUNK_SIZE = 100000
+NUM_ATTEMPTS = 3
+TRANSFER_EVENT_TOPIC_HASH = 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
+TOKEN_ADDRESS = 
+DECIMALS =