Error in importing libraries of helper though helper is installed

to solve these issue run the following code at the top most cell of your notebook to install the helper file;

!wget -c https://raw.githubusercontent.com/udacity/deep-learning-v2-pytorch/master/intro-to-pytorch/helper.py

Then restart your entire runtime for the notebook to load the file

If you're getting an AttributeError, it suggests that you've installed helper but a different version.

You can begin a Colab notebook with a block of only pip calls

!pip install helper==x.y.z...

And you need to run it every time you start a new runtime.

The helper library you are referring to is developed by Udacity.

Define a imshow function as following:

def imshow(image, ax=None, title=None, normalize=True):  """Imshow for Tensor."""  if ax is None:      fig, ax = plt.subplots()  image = image.numpy().transpose((1, 2, 0))  if normalize:      mean = np.array([0.485, 0.456, 0.406])      std = np.array([0.229, 0.224, 0.225])      image = std * image + mean      image = np.clip(image, 0, 1)  ax.imshow(image)  ax.spines['top'].set_visible(False)  ax.spines['right'].set_visible(False)  ax.spines['left'].set_visible(False)  ax.spines['bottom'].set_visible(False)  ax.tick_params(axis='both', length=0)  ax.set_xticklabels('')  ax.set_yticklabels('')  return ax

Afterwards call:

imshow("your_image");

You can call image[0] using

imshow(images[0].view(1, 28, 28));

And you're good to go!

Reference:

https://github.com/udacity/DL_PyTorch/blob/master/helper.py#L42