diff --git a/backend/utils/encoding.py b/backend/utils/encoding.py
index 9f2cd27..3039fbf 100644
--- a/backend/utils/encoding.py
+++ b/backend/utils/encoding.py
@@ -2,8 +2,12 @@ from typing import Dict
 
 # Таблица Base64-подобного варианта
 VariantBase64Table: str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="
-VariantBase64Dict: Dict[int, str] = {i: VariantBase64Table[i] for i in range(len(VariantBase64Table))}
-VariantBase64ReverseDict: Dict[str, int] = {VariantBase64Table[i]: i for i in range(len(VariantBase64Table))}
+VariantBase64Dict: Dict[int, str] = {
+    i: VariantBase64Table[i] for i in range(len(VariantBase64Table))
+}
+VariantBase64ReverseDict: Dict[str, int] = {
+    VariantBase64Table[i]: i for i in range(len(VariantBase64Table))
+}
 
 
 def variant_base64_encode(bs: bytes) -> bytes:
@@ -33,7 +37,8 @@ def variant_base64_encode(bs: bytes) -> bytes:
         b: bytes = bs[-left_bytes:]
         coding_int: int = int.from_bytes(b, "little")
         block: str = "".join(
-            VariantBase64Dict[(coding_int >> shift) & 0x3F] for shift in range(0, left_bytes*8 + 1, 6)
+            VariantBase64Dict[(coding_int >> shift) & 0x3F]
+            for shift in range(0, left_bytes*8 + 1, 6)
         )
         result.extend(block.encode("ascii"))