Update app.py

Adding random seed

app.py

@@ -31,9 +31,10 @@ def get_captcha(images, indexes):
     return fig, fake_idx
 
 def get_challenge():
+    seed = random.randint(0, 1000)
     real_idx = np.random.randint(low=0, high=len(real_files), size=n_real)
     real_samples = np.array([plt.imread(real_files[idx]) for idx in real_idx])
-    generated_samples = generate(n_fake, generator)
+    generated_samples = generate(n_fake, generator, seed)
     captcha_samples = np.concatenate((generated_samples, real_samples))
 
     captcha_idx = [x for x in range(len(captcha_samples))]