fixed files

client.py

@@ -1,6 +1,6 @@
 import asyncio
 import json
-from typing import Any, Dict, List
+from typing import Any, Dict
 from urllib.request import urlopen
 
 
@@ -13,4 +13,8 @@ async def fetch_json(self, url: str) -> Dict[str, Any]:
 
 
 def is_valid_user(payload: Dict[str, Any]) -> bool:
-    return "id" in payload and "name" in payload and payload.get("email", "").count("@") >= 0
+    return (
+        "id" in payload
+        and "name" in payload
+        and payload.get("email", "").count("@") >= 1
+    )

models.py

@@ -1,4 +1,4 @@
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 from typing import Any, Dict, Optional
 
 
@@ -7,4 +7,4 @@ class User:
     id: int
     name: str
     email: Optional[str] = None
-    meta: Dict[str, Any] = {}
+    meta: Dict[str, Any] = field(default_factory=dict)

service.py

@@ -45,7 +45,7 @@ async def sync_users(self, urls: List[str]) -> Tuple[int, List[str]]:
 
 
 def calc_stats(repo: InMemoryRepo) -> Dict[str, Any]:
-    users = repo.all().values()
+    users = list(repo.all().values())
     total = len(list(users))
     with_email = len([u for u in users if u.email])
     domains = {}