add method and route to fetch similar artists from lastfm

app/requests/__init__.py

@@ -0,0 +1,3 @@
+"""
+All network requests are defined here.
+"""

app/requests/artists.py

@@ -0,0 +1,24 @@
+"""
+Requests related to artists
+"""
+import requests
+
+from app import settings
+from app.utils.hashing import create_hash
+
+
+def fetch_similar_artists(name: str):
+    """
+    Fetches similar artists from Last.fm
+    """
+    url = f"https://ws.audioscrobbler.com/2.0/?method=artist.getsimilar&artist={name}&api_key=" \
+          f"{settings.Keys.LASTFM_API_KEY}&format=json&limit=100"
+
+    response = requests.get(url, timeout=10)
+    response.raise_for_status()
+
+    data = response.json()
+    artists = data["similarartists"]["artist"]
+
+    for artist in artists:
+        yield create_hash(artist["name"])