Update sample code

python/main.py

@@ -1,7 +1,5 @@
-import matplotlib.pyplot as plt
+def meow(x: int) -> None:
+    for _ in range(x):
+        print("meow", end="")
 
-fig, ax = plt.subplots()
+meow(10)
-ax.plot([1, 2, 3, -3])
-ax.set_xlabel("time")
-ax.set_ylabel("swag")
-plt.show()