Add initial window.

snake/main.py

@@ -0,0 +1,21 @@
+import pygame
+
+
+if __name__ == '__main__':
+    pygame.init()
+    pygame.display.set_caption('Snake')
+    surface = pygame.display.set_mode(size=(800, 600))
+    clock = pygame.time.Clock()
+    framerate = 25
+
+    shall_abort = False
+
+    while not shall_abort:
+        for event in pygame.event.get():
+            if event.type == pygame.QUIT:
+                shall_abort = True
+
+        surface.fill((0, 0, 0))
+
+        clock.tick(framerate)
+        pygame.display.flip()