get block number from tx hash

src/apis/web3api.py

@@ -85,7 +85,17 @@ def get_transaction(self, tx_hash: str) -> Optional[TxData]:
             transaction = None
 
         return transaction
-
+
+    def get_tx_block_number(self, tx_hash: str) -> Optional[int]:
+        """
+        Takes tx hash as input, returns block number where tx took place.
+        """
+        transaction = self.get_transaction(tx_hash)
+        if transaction is None:
+            return None
+        else:
+            return transaction['blockNumber']
+
     def get_receipt(self, tx_hash: str) -> Optional[TxReceipt]:
         """
         Get the receipt of a transaction from the transaction hash.