'No module named "Torch"

I successfully installed pytorch via conda:

conda install pytorch-cpu torchvision-cpu -c pytorch

I also successfully installed pytorch via pip:

pip3 install https://download.pytorch.org/whl/cpu/torch-1.0.1-cp36-cp36m-win_amd64.whl
pip3 install torchvision

But, it only works in a jupyter notebook. Whenever I try to execute a script from the console, I get the error message:

No module named "torch"

Solution 1:^[1]

Try to install PyTorch using pip:

First create a Conda environment using:

conda create -n env_pytorch python=3.6

Activate the environment using:

conda activate env_pytorch

Now install PyTorch using pip:

pip install torchvision

_{Note: This will install both torch and torchvision.}

Now go to Python shell and import using the command:

import torch
import torchvision

Solution 2:^[2]

I installed on my macos by the official command:

conda install pytorch torchvision -c pytorch

but when I follow the official verification I get the same problem like yours.

Then I create a conda virtual environment:

conda create --name learnpytorch python=3.5

and install pytorch inside the environment:

conda install pytorch torchvision -c pytorch

run the verification, it works.

Hope these could help you.

Solution 3:^[3]

If you are using Anaconda Prompt, there is a simpler way to solve this.

conda install -c pytorch pytorch

Solution 4:^[4]

You need to add this at the very top of your program

import torch

If this is not a problem execute this program on both Jupiter and command line and pretty much you will understand if you have a mismatch.

import sys
print(sys.executable)

Solution 5:^[5]

Usually if the torch/tensorflow has been successfully installed, you still cannot import those libraries, the reason is that the python environment you try to import is not the python environment you installed.

For example, if you have installed the torch/tensorflow using python='/usr/bin/python', then you cannot import them to python='/home/usrname/.../bin/python'.

The solution is simple thus, just change the python and import again.

Solution 6:^[6]

Make sure that NumPy and Skipy libraries are installed before installing the torch library that worked for me at least on windows.

step 1. Install NumPy: pip install numpy
step 2. Install Skipy: pip install skipy
step 3. Go to pytorch.org and select your needs and copy the address
step 4. Paste the address and download

Hope that works for you as well ( :

Solution 7:^[7]

Switch to python3 on the notebook

Solution 8:^[8]

Welcome to SO,

please create a seperate conda environment

activate this environment conda activate myenv and than install pytorch in it.

Besides you can check which python you are currently using by which python

Solution 9:^[9]

The procedure I used is specific to Windows 10 PyTorch installation on anaconda.

Create a conda virtual environment using: conda create -n torch_env
Activate virtual environment using: conda activate torch_env
When I installed, this was my current config: conda install pytorch torchvision torchaudio cudatoolkit=10.2 -c pytorch.

Please find correct configuration according to your system settings from pytorch website directly: https://pytorch.org/get-started/locally/

Run python with import torch command. It should definitely work!

Solution 10:^[10]

If you are using conda, it's possible that your console is using a different version of python, and the packages you installed using conda are not installed on this version. In my case, I installed a 3.9 version by downloading from the website, and conda installed a 3.8 version. And all the packages only installed for 3.8. Deleting the 3.9 version did the trick for me.

Solution 11:^[11]

I am struggling the above answer and it does not work in my case.
That is because I install the porch under window COMMAND PROMPT.

Installed under the Anaconda environment command prompt. To do that, type "anaconda" and select the ANACONDA COMMAND PROMPT (this is very important for me to fix my mistake)
Do the same command from: https://pytorch.org/get-started/locally/

Solution 12:^[12]

Check SDK install. you also install the sdk in your environment.

You can install the SDK using navigator.

first, change tab to Environments,

second, push play button of your environment name.

Third, then install SDK.

Solution 13:^[13]

I had the same problem after following the official installation guide in here. I realized that it was my stupid Atom built-in terminal.

Inside the atom terminal, which python returned /usr/bin/python, although it showed the mark of (conda_env)$.

I fixed it by opening a new terminal and activating the (conda_env), and it worked. Verified and which python yields /Users/my_usr/anaconda3/envs/conda_env/bin/python

Solution 14:^[14]

If you are using windows and you have no CUDA, then go with the following command.

pip install torch==1.7.0+cpu torchvision==0.8.1+cpu torchaudio===0.7.0 -f https://download.pytorch.org/whl/torch_stable.html

You can visit its official site for more explanation. Pytorch Official site

Solution 15:^[15]

If you are in the console, and importing a function that uses torch, you may need to add import torch within the function to allow for the correct scope. Because if you are importing the function, and there is no import statement at the top of the file, it won't work. Alternatively, make sure import torch is at the top of the module with the function you are trying to use, and within console, call the function using: your_module.function_that_references_torch()

Solution 16:^[16]

Using Conda on win 10 running script from vs code terminal as:

$ script.py

Generates error:

ModuleNotFoundError: No module named 'torch'

The system goes outside the environment to execute call python.

This works:

$ python script.py

Solution 17:^[17]

I tried to fixed the problem both in my laptop and computer, and it was fixed in different ways. You can try.

Laptop(Nvidia GTX 950M)

I fixed the problem by typing this under the environment that you install pytorch.

$ conda install pytorch torchvision cudatoolkit=10.0 -c pytorch

Remember to change the version(10.0) of you cuda

Computer(No GPU)

$ conda update -n base -c defaults conda

Solution 18:^[18]

I had the same problem right after installing pytorch from the console, without closing it and restarting it. By restarting the console and re-entering my env, I solved the problem

Solution 19:^[19]

Most of the answers to this question are unsatisfying in that they explain how to create and activate a conda environment. The reason for the error is however not explained.

In my case, I had a conda environment set up, but the torch module was still not found, even if I installed it. The reason for the error is that python v2 was the main interpreter, not python3. You can test that by running python --version

Then follow the instructions from above to install the conda environment with the correct python version, e.g. conda create -n venv python=3.9

Solution 20:^[20]

Create the environment:

conda create -n env_pytorch python=3.6

Install your modules. For example:

conda install pytorch torchvision cudatoolkit=10.2 -c pytorch

Next time you want to use pytorch:

conda activate env_pytorch

and when finished:

conda deactivate

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	merv
Solution 2
Solution 3
Solution 4	prosti
Solution 5	Abhishek Gurjar
Solution 6	Liamdinjo
Solution 7	Anga
Solution 8
Solution 9	Akshaya Natarajan
Solution 10	Dharman
Solution 11	Peter Chen
Solution 12	Peter P.
Solution 13	Fide Lee
Solution 14	Ritik Kumar
Solution 15	devdrc
Solution 16	Allen M
Solution 17	MeloLin
Solution 18	GTS
Solution 19	reggie
Solution 20	prometeu

'No module named "Torch"

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