"Error: No module named 'bcolz'." but bcolz is already installed

Part 1 (2018)
6

I have tried a bunch of solutions listed below but still get the same error. Any ideas?

conda install -c anaconda bcolz
pip install conda

source activate my_conda_env
(my_conda_env) $ conda install nb_conda

ModuleNotFoundError Traceback (most recent call last)
in ()
1 # This file contains all the main external libs we’ll use
----> 2 from fastai.imports import *

~/sample-notebooks/fastai/courses/dl1/fastai/imports.py in ()
1 from IPython.lib.deepreload import reload as dreload
----> 2 import PIL, os, numpy as np, math, collections, threading, json, bcolz, random, scipy, cv2
3 import random, pandas as pd, pickle, sys, itertools, string, sys, re, datetime, time, shutil
4 import seaborn as sns, matplotlib
5 import IPython, graphviz, sklearn_pandas, sklearn, warnings

ModuleNotFoundError: No module named ‘bcolz’

7

You should update your envirorment.

Go to your working directory and type:

conda env update

And then activate:

conda activate fastai
2 Likes
8

found this thread while resolving same problem.

my blog below documents this and other fixes to get the python notebook running.

I’ve documented a series of setup issues on this medium account. Hope these help a future someone :slight_smile:

5 Likes
9

Hii,
I have found the same error while doing setup even when I had already installed the required packages, after checking forums again I tried to run the jupyter notebook as @cqfd suggested from the working directory then I was not getting this issue anymore.

Thanks a lot @cqfd

3 Likes
10

Thanks, it worked !!!

11

If this is the issue, how do i correct the path if i do not have sudo permissions?

12

I went ahead and install Jupyter Notebook in my fastai cuda env and it worked :slight_smile:

I changed directory to my fastai root, activated conda env, and install jupyter notebook there

cd ~/fastai
source activate fastai
conda install jupyter
conda env update
source deactivate
source activate fastai
jupyter notebook
3 Likes
13

are you able to solve this error?

14

ah awesome. this finally worked. I’m a prorammer well versed in bash, but couldn’t figure this thing out…Feel sorry for the less experienced people :slight_smile:

15

Thanks. This worked for my Windows 10.

1 Like
16

I got this same error. A dumb and quick thing that I tried and worked was changing the ipykernel to the default (Python 3).

17

Hi guys, I would really appreciate some help here. I believe I have tried every suggestion here, but I still get the same error.

My system:

  • Windows 10
  • Anaconda3
  • Run all the steps listed in the Windows10 install howto here.

I’m sure I have this bcolz library installed. I can load it using ipython:

(fastai) C:\Users\gusta\source\repos\fastai>ipython
Python 3.6.8 |Anaconda, Inc.| (default, Dec 30 2018, 18:50:55) [MSC v.1915 64 bit (AMD64)]
Type 'copyright', 'credits' or 'license' for more information
IPython 7.2.0 -- An enhanced Interactive Python. Type '?' for help.
In [1]: import bcolz
In [2]:

I can even open the Jupyter notebook, and check that the package is visible there:

Conda_packages
Conda_packages.JPG1022×799 117 KB

(Notice from the figure that the package list was obtained from the very shell that is running lesson1.ipynb. Jupyter is installed in the fastai environment. Still, when trying to load the cell, I get the same error:

bcolz_error
bcolz_error.JPG922×342 54.7 KB

I’m out of ideas here. Could anyone help me? I really appreciate any leads.

Thank you very much!

18

doesnot work for me… Any help.

1 Like
19

have you find the solutions? I have the same problem with you too

20

on Mac Book (Pro) there in no support for gpu, so when installing you need to use ‘conda env create -f environment-cpu.yml’. that worked for me.

21

what did you do? I am running the following commands. Help appreciated.

cd ~/fastai
source activate fastai-cpu
conda install jupyter
conda env update -f environment-cpu.yml
source deactivate
source activate fastai-cpu
jupyter notebook

same error when running the problem cell:

ModuleNotFoundError: No module named ‘bcolz’

this is on mac osx btw. Trying to follow along on the ml1 course

22

Hi Nicholas,
I came across similar issues but this medium article would help solving problems. You have to install specific libraries to overcome those errors. Please go through the article and I hope that would solve the problem.

23

Thank you very much!

24

In my case, the problem was that I wasn’t running the jupyter notebook with the kernel associated with the conda environment. So, after activate the environment:
conda install nb_conda
Then relaunch the jupyter notebook, and be sure the kernel associated is activated:
38
Otherwise, select Kernel, change Kernel and select the kernel with the right environment.
Regards!

25

Thanks carlos this helped me.