Update api_client.py

api_client.py

@@ -0,0 +1,18 @@
+import requests
+
+DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
+
+def fetch_questions():
+    response = requests.get(f"{DEFAULT_API_URL}/questions", timeout=15)
+    response.raise_for_status()
+    return response.json()
+
+def submit_answers(username, agent_code, answers):
+    payload = {
+        "username": username.strip(),
+        "agent_code": agent_code,
+        "answers": answers
+    }
+    response = requests.post(f"{DEFAULT_API_URL}/submit", json=payload, timeout=60)
+    response.raise_for_status()
+    return response.json()