add code for best plot eva

exercises/exerciseA/plot.py

@@ -7,6 +7,7 @@ threads, timings = [], []
 for file in os.listdir('timings'):
     with open(f'timings/{file}', 'r') as f:
         n, t = f.read().strip().split(',')
+        if n != 'None':
             threads.append(int(n))
             timings.append(float(t))
 threads = np.array(threads)
@@ -16,8 +17,9 @@ print('This is the data I loaded: threads =', threads, ', timings =',timings)
 
 fig, axs = plt.subplots()
 
-# CREATE YOUR PLOT HERE
-# Remember to label your axis
-# Feel free to make it pretty
+axs.scatter(x=threads, y=timings, color = 'hotpink', marker = '*')
+axs.set_xlabel('Number of threads')
+axs.set_ylabel('Timing [s]')
+axs.grid()
 
-plt.savefig('threads_v_timings.png', dpi=300)
+plt.savefig('threads_v_timings', dpi=300)