Log_args not defined

Deep Learning
1

I am getting below error while trying the execute very first code example in Google Colab from the course , can some one help ?

Code :
from fastai2.vision.all import *
path = untar_data(URLs.PETS)/‘images’

def is_cat(x): return x[0].isupper()
dls = ImageDataLoaders.from_name_func(
path, get_image_files(path), valid_pct=0.2, seed=42,
label_func=is_cat, item_tfms=Resize(224))

learn = cnn_learner(dls, resnet34, metrics=error_rate)
learn.fine_tune(1)

Error :
NameError Traceback (most recent call last)

in () ----> 1 from fastai2.vision.all import * 2 path = untar_data(URLs.PETS)/‘images’ 3 4 def is_cat(x): return x[0].isupper() 5 dls = ImageDataLoaders.from_name_func(

4 frames

/usr/local/lib/python3.7/dist-packages/fastai2/layers.py in () 274 275 # Cell → 276 @log_args 277 class BaseLoss(): 278 “Same as loss_cls, but flattens input and target.”

NameError: name ‘log_args’ is not defined

2

Isn’t fastai2 just fastai now? Are these the old notebooks maybe?

3

Please update the fastcore library. And fastai2 should be renamed to fastai in the import section.
!pip install -U fastcore

from fastai.vision.all import *
1 Like
5

Updating to recent fast version resolved issue .

pip install fastai --upgrade