Quick Start Problems Code Run Problemss

Part 1 (2019)
1

I have copied all the code modules into Colab and tried running each code examples and none of it works.

What am I missing?

Does anyone have a version of these code modules that work?

2

You need to install fastai2 and restart the runtime (ctrl-M .) or try this (it works with my Colab at leat) in the very first cell (run the cell twice):

# from fastai2.vision.all import *

try: from fastai.vision.all import *
except ModuleNotFoundError:
  !pip install -Uqq fastai
  try: from fastai.vision.all import *
  except ModuleNotFoundError:
    import os
    os._exit(0)
# run this cell twice
3

@mikeee why not simply do !pip install -Uqq fastai before importing any fastai modules in colab notebooks?

4

Thank you for you response but as I understand it, fastat2 is already installed in Colab so I do not understand why you want me to install it.

5

No, as for now colab has fastai 1.x preinstalled

6

btw you can run code from the book on colab taking it in the book repository. In this way you should avoid all the setup issues

7

Hi arampacha,

So the instructions you gave me installs fastai2 and overrides v1 on Colab—is that correct?

Thanks.

8

yep, -U options tells pip to upgrade libraries to latest versions, and qq is for quiet, so pip doesn’t print all it’s output

9

This is error I got and installing fastai2 and running code.

Any suggestions?

DanDunneCode1.pdf (118.9 KB)

Thanks.

10

Try run

from fastai.data.all import *

or

from fastai.vision.all import *

or

from fastai.text.all import *

first (assuming fastai2). untar_data is in fact in data/external.py. But any of the above imports will automatically import all functions in external.py I think (data/all.py (vision/all.py, text/all.py) takes care of it).