object of type 'filter' has no len() about keras-vis

[raghakot]

Did you try installing from source? I wrap the output as a list so it should have len in both python 2 and 3

[raghakot]

It's because filter returns an Iterator in python3. Fixed.

[jskDr]

It is not fixed. I still have the same error. If it is my special case, please ignore this comment.

---

TypeError Traceback (most recent call last)
in ()
----> 1 opt.minimize(max_iter=500, verbose=True, image_modifiers=[Jitter()], callbacks=[GifGenerator('opt_progress')])

C:\ProgramData\Anaconda3\lib\site-packages\vis\optimizer.py in minimize(self, seed_img, max_iter, image_modifiers, callbacks, verbose)
132 # Trigger callbacks
133 for c in callbacks:
--> 134 c.callback(i, named_losses, overall_loss, grads, wrt_value)
135
136 # Gradient descent update.

C:\ProgramData\Anaconda3\lib\site-packages\vis\callbacks.py in callback(self, i, named_losses, overall_loss, grads, wrt_value)
59 def callback(self, i, named_losses, overall_loss, grads, wrt_value):
60 img = utils.deprocess_image(wrt_value[0])
---> 61 img = utils.draw_text(img, "Step {}".format(i + 1))
62 self.writer.append_data(img)
63

C:\ProgramData\Anaconda3\lib\site-packages\vis\utils\utils.py in draw_text(img, text, position, font, font_size, color)
230
231 font_files = _find_font_file(font)
--> 232 if len(font_files) == 0:
233 logger.warn("Failed to lookup font '{}', falling back to default".format(font))
234 font = ImageFont.load_default()

TypeError: object of type 'filter' has no len()