From 91e13e806c7ad07cddeb526fffeb42afff84a54d Mon Sep 17 00:00:00 2001
From: Jerry <jerrycgh@gmail.com>
Date: Tue, 18 Apr 2023 21:54:27 -0700
Subject: [PATCH] Return empty utxo list from blockfrost when an address is
 never used before

---
 pycardano/backend/blockfrost.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pycardano/backend/blockfrost.py b/pycardano/backend/blockfrost.py
index 5e2225c5..88447a38 100644
--- a/pycardano/backend/blockfrost.py
+++ b/pycardano/backend/blockfrost.py
@@ -181,7 +181,13 @@ def _get_script(
             return NativeScript.from_dict(script_json)
 
     def _utxos(self, address: str) -> List[UTxO]:
-        results = self.api.address_utxos(address, gather_pages=True)
+        try:
+            results = self.api.address_utxos(address, gather_pages=True)
+        except ApiError as e:
+            if e.status_code == 404:
+                return []
+            else:
+                raise e
 
         utxos = []