simple create and update implementation

movie_service.py

@@ -0,0 +1,27 @@
+movies = []
+
+
+class Movie(object):
+    def __init__(self, name, sample_attr):
+        self.name = name
+        self.sample_attr = sample_attr
+        movies.append(self)
+
+
+def create(name, sample_attr):
+    return Movie(name, sample_attr)
+
+
+def update(name, set_sample_attr):
+    matches = [m for m in movies if m.name == name]
+    if len(matches) != 1:
+        raise LookupError(f"{matches}/{name} should be of length 1")
+
+    matches[0].sample_attr = set_sample_attr
+
+    return matches[0]
+
+
+def _clear_movies():
+    while movies:
+        movies.pop()

test_overview.py

@@ -9,15 +9,16 @@ import movie_service
 def test_create():
     movie = movie_service.create(name="Base movie", sample_attr=0)
 
-    assert movie_service.movies
+    assert movie
 
 
 def test_update():
+    movie_service._clear_movies()
     initial_value = None
     value_to_set = 1
 
     movie = movie_service.create(name="Base movie", sample_attr=initial_value)
 
-    base_value = move.sample_attr
+    base_value = movie.sample_attr
 
     movie_service.update(name="Base movie", set_sample_attr=value_to_set)