When using Python, a common error you may encounter is modulenotfounderror: no module named ‘torch’. This error occurs when Python cannot detect the PyTorch library in your current environment. This tutorial goes through the exact steps to troubleshoot this error for the Windows, Mac and Linux operating systems.
Table of contents
- ModuleNotFoundError: no module named ‘torch’
- What is PyTorch?
- How to Install PyTorch on Windows Operating System
- PyTorch installation with Pip on Windows for CPU
- PyTorch installation with Pip on Windows for CUDA 10.2
- PyTorch installation with Pip on Windows for CUDA 11.3
- How to Install PyTorch on Mac Operating System
- How to Install PyTorch on Linux Operating Systems
- Installing pip for Ubuntu, Debian, and Linux Mint
- Installing pip for CentOS 8 (and newer), Fedora, and Red Hat
- Installing pip for CentOS 6 and 7, and older versions of Red Hat
- Installing pip for Arch Linux and Manjaro
- Installing pip for OpenSUSE
- PyTorch installation on Linux with Pip for CPU
- PyTorch installation on Linux with Pip for CUDA 10.2
- PyTorch installation on Linux with Pip for CUDA 11.3
- Installing PyTorch Using Anaconda
- Installing PyTorch Using Anaconda for CPU
- Installing PyTorch Using Anaconda for CUDA 10.2
- Installing PyTorch Using Anaconda for CUDA 11.3
- Check PyTorch Version
- Summary
ModuleNotFoundError: no module named ‘torch’
What is PyTorch?
PyTorch is an open-source deep learning framework developed by Facebook’s AI Research lab. PyTorch provides a beginner-friendly and Pythonic API for building complex models for research and industrial applications.
The simplest way to install PyTorch is to use the package manager for Python called pip. The following installation instructions are for the major Python version 3.
When you want to install PyTorch using pip, the packages to install together are torch, torchvision, and torchaudio.
How to Install PyTorch on Windows Operating System
First, you need to download and install Python on your PC. Ensure you select the install launcher for all users and Add Python to PATH checkboxes. The latter ensures the interpreter is in the execution path. Pip is automatically on Windows for Python versions 2.7.9+ and 3.4+.
You can check your Python version with the following command:
python3 --version
You can install pip on Windows by downloading the installation package, opening the command line and launching the installer. You can install pip via the CMD prompt by running the following command.
python get-pip.py
You may need to run the command prompt as administrator. Check whether the installation has been successful by typing.
pip --version
PyTorch installation with Pip on Windows for CPU
To install PyTorch for CPU, run the following command from the command prompt.
pip3 install torch torchvision torchaudio
PyTorch installation with Pip on Windows for CUDA 10.2
To install PyTorch for CUDA 10.2, run the following command from the command prompt.
pip3 install torch==1.10.0+cu102 torchvision==0.11.1+cu102 torchaudio===0.10.0+cu102 -f https://download.pytorch.org/whl/cu102/torch_stable.html
PyTorch installation with Pip on Windows for CUDA 11.3
To install PyTorch for CUDA 11.3, run the following command from the command prompt.
pip3 install torch==1.10.0+cu113 torchvision==0.11.1+cu113 torchaudio===0.10.0+cu113 -f https://download.pytorch.org/whl/cu113/torch_stable.html
How to Install PyTorch on Mac Operating System
Open a terminal by pressing command (⌘) + Space Bar to open the Spotlight search. Type in terminal and press enter. To get pip, first ensure you have installed Python3:
python3 --version
Python 3.8.8
Download pip by running the following curl command:
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
The curl command allows you to specify a direct download link. Using the -o option sets the name of the downloaded file.
Install pip by running:
python3 get-pip.py
From the terminal, use pip3 to install PyTorch:
pip3 install torch torchvision torchaudio
Note that this is the only way to install PyTorch using pip on the Mac operating system because the macOS binaries do not support CUDA. You can install from the source if you need CUDA.
How to Install PyTorch on Linux Operating Systems
All major Linux distributions have Python installed by default. However, you will need to install pip. You can install pip from the terminal, but the installation instructions depend on the Linux distribution you are using. You will need root privileges to install pip. Open a terminal and use the commands relevant to your Linux distribution to install pip.
Installing pip for Ubuntu, Debian, and Linux Mint
sudo apt install python-pip3
Installing pip for CentOS 8 (and newer), Fedora, and Red Hat
sudo dnf install python-pip3
Installing pip for CentOS 6 and 7, and older versions of Red Hat
sudo yum install epel-releasesudo yum install python-pip3
Installing pip for Arch Linux and Manjaro
sudo pacman -S python-pip
Installing pip for OpenSUSE
sudo zypper python3-pip
PyTorch installation on Linux with Pip for CPU
Once you have installed pip, you can install PyTorch using:
pip3 install torch==1.10.0+cpu torchvision==0.11.1+cpu torchaudio==0.10.0+cpu -f https://download.pytorch.org/whl/cpu/torch_stable.html
PyTorch installation on Linux with Pip for CUDA 10.2
Once you have installed pip, you can install PyTorch using:
pip3 install torch torchvision torchaudio
PyTorch installation on Linux with Pip for CUDA 11.3
Once you have installed pip, you can install PyTorch using:
pip3 install torch==1.10.0+cu113 torchvision==0.11.1+cu113 torchaudio==0.10.0+cu113 -f https://download.pytorch.org/whl/cu113/torch_stable.html
Installing PyTorch Using Anaconda
First, to create a conda environment to install PyTorch.
conda create -n pytorch python=3.6 numpy=1.13.3 scipy
Then activate the PyTorch container. You will see “pytorch” in parentheses next to the command line prompt.
source activate pytorch
Now you’re ready to install PyTorch using conda. The command will change based on the operating system and whether or not you need CUDA.
Installing PyTorch Using Anaconda for CPU
Anaconda is a distribution of Python and R for scientific computing and data science. You can install Anaconda by going to the installation instructions. Once you have installed Anaconda and created your conda environment, you can install PyTorch using the following command:
conda install pytorch torchvision torchaudio cpuonly -c pytorch
Note that this is the only way to install PyTorch using conda on the Mac operating system because the macOS binaries do not support CUDA. You can install from the source if you need CUDA.
Installing PyTorch Using Anaconda for CUDA 10.2
Anaconda is a distribution of Python and R for scientific computing and data science. You can install Anaconda by going to the installation instructions. Once you have installed Anaconda, you can install PyTorch using the following command:
conda install pytorch torchvision torchaudio cudatoolkit=10.2 -c pytorch
Installing PyTorch Using Anaconda for CUDA 11.3
Anaconda is a distribution of Python and R for scientific computing and data science. You can install Anaconda by going to the installation instructions. Once you have installed Anaconda, you can install PyTorch using the following command:
conda install pytorch torchvision torchaudio cudatoolkit=11.3 -c pytorch
Check PyTorch Version
Once you have successfully installed PyTorch, you can use two methods to check the version of PyTorch. First, you can use pip show from your terminal. Remember that the name of the PyTorch package is torch.
pip show torch
Name: torchVersion: 1.10.0+cu102Summary: Tensors and Dynamic neural networks in Python with strong GPU accelerationHome-page: https://pytorch.org/Author: PyTorch TeamAuthor-email: [emailprotected]License: BSD-3Location: /home/ubuntu/anaconda3/envs/tensorflow2_latest_p37/lib/python3.7/site-packagesRequires: typing-extensionsRequired-by: torchaudio, torchvision
Second, within your python program, you can import torch and then reference the __version__ attribute:
import torchprint(torch.__version__)
1.10.0+cu102
If you used conda to install PyTorch, you could check the version using the following command:
conda list -f pytorch
Summary
Congratulations on reading to the end of this tutorial. The modulenotfounderror occurs if you misspell the module name, incorrectly point to the module path or do not have the module installed in your Python environment. If you do not have the module installed in your Python environment, you can use pip to install the package. However, you must ensure you have pip installed on your system. You can also install Anaconda on your system and use the conda install command to install PyTorch.
For further reading on operations with PyTorch, go to the article: How to Convert NumPy Array to PyTorch Tensor.
Go to theonline courses page on Pythonto learn more about Python for data science and machine learning.
For further reading on missing modules, go to the articles:
- How to Solve Python ModuleNotFoundError: no module named ‘pil’.
- How to Solve ModuleNotFoundError: No module named ‘tensorflow.contrib’.
Have fun and happy researching!
Related
FAQs
How do I fix no module named torch? ›
- Create a conda environment with conda create -n my-torch python=3.7 -y.
- Activate the new environment with conda activate my-torch.
- Inside the new environment, install PyTorch and related packages with:
...
How to fix the ModuleNotFoundError in Python
- Make sure imported modules are installed. Take for example, numpy . ...
- 2. Make sure modules are spelled correctly. ...
- 3. Make sure modules are in the right casing. ...
- 4. Make sure you use the right paths.
To install PyTorch, you have to run the installation command of PyTorch on your command prompt. This command is available on https://pytorch.org/. Select language and cuda version as per your requirement. Now, run python -version, and Conda -version command to check Conda and python packages are installed or not.
Why am i not able to import torch? ›The most likely reason is that Python doesn't provide torch in its standard library. You need to install it first! Before being able to import the torch module, you need to install it using Python's package manager pip . Make sure pip is installed on your machine.
How to install PyTorch in pip? ›To install PyTorch via pip, and do have a CUDA-capable system, in the above selector, choose OS: Linux, Package: Pip, Language: Python and the CUDA version suited to your machine. Often, the latest CUDA version is better. Then, run the command that is presented to you.
How do you check torch is installed or not? ›You can use torch. __version__ to check the version of PyTorch. If you have not imported PyTorch, use import torch first. If you used pip to install PyTorch, run pip3 show torch to show all the information of the installation, which also includes the version of PyTorch.
Why Python does not recognize my module? ›This is caused by the fact that the version of Python you're running your script with is not configured to search for modules where you've installed them. This happens when you use the wrong installation of pip to install packages.
How to import module to Python? ›- Step 1) Create a file and name it test.py.
- Step 2) Inside test.py create a function called display_message() ...
- Step 3) Now create another file display.py.
- Step 4) Inside display.py import the moduletest.py file, as shown below: import test. ...
- Step5)
- Securely Download get-pip.py 1.
- Run python get-pip.py . 2 This will install or upgrade pip. Additionally, it will install setuptools and wheel if they're not installed already. Warning.
Prerequisites. If you are installing from source, you will need: Python 3.7 or later (for Linux, Python 3.7.6+ or 3.8.1+ is needed)
How do I manually install PyTorch? ›
- Create a conda environment with conda create -n my-torch python=3.7 -y.
- Activate the new environment with conda activate my-torch.
- Inside the new environment, install PyTorch and related packages with:
- Install Anaconda.
- Open Anaconda Prompt (NOT Anaconda Navigator)
- conda install pytorch -c pytorch.
- pip install torchvision.
- Add environment to ipykernel.
The most common reason for this problem is that the Python version is too new to be compatible with the torch package. Currently, the torch package on pypi is only supported up to Python version 3.7. We recommend trying to use Python version 3.7 or version 3.8 in a conda virtual environment.
How do I fix Torch browser? ›Make sure Torch is allowed in your antivirus and firewall settings. Adjust your proxy settings. Disable your extensions in Torch. Then re-open Torch and try again.
How do I import a PyTorch model? ›- Step 1 - Import library. import torch. ...
- Step 2 - Define Model. class MyModel(nn.Module): ...
- Step 3 - Initializing optimizer. optim = optim.SGD(Model.parameters(), lr=0.01, momentum=0.9)
- Step 4 - Accessing Model. ...
- Step 5 - Accessing Optimizer. ...
- Step 6 - Save the model. ...
- Step 7 - Load the model.
- python3 --version.
- pip3 --version.
- pip3 install torch torchvision torchaudio.
- pip3 show torch.
- pip uninstall torch.
- conda activate.
- conda --version.
- conda install pytorch torchvision torchaudio -c pytorch.
We've just released a new version of fastai, which adds support for pytorch 1.11 (which means fastai now supports python 3.10). Great!
How to use PyTorch in Python? ›- Step 1: Prepare the Data.
- Step 2: Define the Model.
- Step 3: Train the Model.
- Step 4: Evaluate the Model.
- Step 5: Make Predictions.
To know whether an allocated tensor has zero elements, use numel() To know whether a tensor is allocated and whether it has zero elements, use defined() and then numel()
How to uninstall PyTorch using pip? ›If you installed PyTorch from the source you can uninstall it by removing the Pytorch folder from your system. As its all dependencies are in the folder they will automatically be removed when you remove that folder.
How do I install torch offline? ›
- Create an empty folder.
- pip download torch using the connected computer. You'll get the pytorch package and all its dependencies.
- Copy the folder to the offline computer. ...
- pip install * on the offline computer, in the copied folder.
Installing Python Packages with Setup.py
To install a package that includes a setup.py file, open a command or terminal window and: cd into the root directory where setup.py is located. Enter: python setup.py install.
Installing Python modules in Windows
The Python package manager (pip) allows for the installation of modules and packages. Open a terminal and use the pip command to install a module across the entire system.
You can manually go and check the PYTHONPATH variable contents to find the directories from where these built in modules are being imported. Running "python -v"from the command line tells you what is being imported and from where. This is useful if you want to know the location of built in modules.
Which are the 3 different ways to import modules in Python? ›- Using the import statement.
- Using from clause.
- Using from clause and *
Running Modules With the -m Option
For example, if you want to run a Python module, you can use the command python -m <module-name> . $ python3 -m hello Hello World! Note: module-name needs to be the name of a module object, not a string.
- Download the package and extract it into a local directory.
- Navigate to the directory in which you've extracted the package.
- If the package includes its own set of installation instructions, they should be followed.
A “pip: command not found” error occurs when you fail to properly install the package installer for Python (pip) needed to run Python on your computer. To fix it, you will either need to re-install Python and check the box to add Python to your PATH or install pip on your command line.
Where can I download pip for Python? ›In addition to installing pip in your environment, pip is available as a standalone zip application. This can be downloaded from https://bootstrap.pypa.io/pip/pip.pyz. There are also zip applications for specific pip versions, named pip-X.Y.Z.pyz . then the currently active Python interpreter will be used.
How to install Python in command prompt? ›To do so, open the command line application Command Prompt (in Windows search, type cmd and press Enter ) or Windows PowerShell (right-click on the Start button and select Windows PowerShell ) and type there python -V . If you found that Python is already installed on your computer and want to check the path of the ...
Is PyTorch built on Python? ›
PyTorch is an open source machine learning (ML) framework based on the Python programming language and the Torch library. Torch is an open source ML library used for creating deep neural networks and is written in the Lua scripting language.
Do I need to install pip? ›PIP for Python is a utility to manage PyPI package installations from the command line. If you are using an older version of Python on Windows, you may need to install PIP.
Is PyTorch part of Python? ›PyTorch is a fully featured framework for building deep learning models, which is a type of machine learning that's commonly used in applications like image recognition and language processing. Written in Python, it's relatively easy for most machine learning developers to learn and use.
How do I activate PyTorch? ›- $ source activate pytorch_p36. For PyTorch on Python 2 with CUDA 10 and MKL-DNN, run this command:
- $ source activate pytorch_p27. Start the iPython terminal.
- (pytorch_p36)$ ipython. ...
- import torch x = torch.rand(5, 3) print(x) print(x.size()) y = torch.rand(5, 3) print(torch.add(x, y))
Install PyTorch
Stable represents the most currently tested and supported version of PyTorch. This should be suitable for many users. Preview is available if you want the latest, not fully tested and supported, builds that are generated nightly.
We have compiled a list of solutions that reviewers voted as the best overall alternatives and competitors to PyTorch, including scikit-learn, V7, Keysight Eggplant Platform, and Amazon Forecast.
How do I install torch plugins? ›Before getting started, please make sure Torch is installed. You can install Torch with the click of a single "Install" button, found under "Non-Workshop Mods" in your game panel. Step 2: Click the plugin's name and click the label that reads "(Click to download)". Download the file to any location on your PC.
Is Torch and PyTorch same? ›PyTorch is based on Torch, an early framework for deep learning. PyTorch just takes the deep learning potential of Torch and ports it into the Python environment. Python has become one of the most popular programming languages for web-related applications, alongside other modern programming languages like R.
How to install Torch module in Python in VS Code? ›- Launch Visual Studio Code.
- From the command palette Ctrl-Shift-P (Windows, Linux) or Cmd-Shift-P (MacOS) select Install Extension or just simply go to the Extensions tab (most likely the fifth entry on the left sidebar). ...
- Type PyTorch Snippets.
- Choose and install extension.
- Restart/Reload Visual Studio Code.
Run PyTorch models in the browser with JavaScript by first converting your PyTorch model into the ONNX format and then loading that ONNX model in your website or app using ONNX. js.
Is PyTorch necessary? ›
PyTorch is favored over other Deep Learning frameworks like TensorFlow and Keras since it uses dynamic computation graphs and is completely Pythonic. It allows scientists, developers, and neural network debuggers to run and test portions of the code in real-time.
Do you need TensorFlow for PyTorch? ›TensorFlow also beats PyTorch in deploying trained models to production, thanks to the TensorFlow Serving framework. PyTorch offers no such framework, so developers need to use Django or Flask as a back-end server.
Where is the Torch settings? ›Open the Settings App, then go to System → Gestures → Quick Tap. Turn on the feature by pressing the Use Quick Tap button. Scroll down, then tap the Toggle flashlight option.
How do I get to Torch settings? ›- Swipe down from the top of the screen to reveal the Quick Settings icons.
- Find the "Flashlight" icon and tap it. ...
- Tap the Flashlight icon a second time to turn it off.
...
Torch (web browser)
Developer(s) | Torch Media Inc. |
---|---|
Final release | 69.2.0.1713 / 30 September 2020 |
Operating system | Windows 7, Windows 8 and Windows 10 |
Platform | IA-32 |
Size | 82.3 MB |
- Download the file.
- Run it to start the installation process.
- At the prompt “Install for:” choose “Just Me”
- Confirm the default installation location (probably “C:\Users\THEUSERNAME\Miniconda3”) and take a note of that location!
PyTorch uses modules to represent neural networks. Modules are: Building blocks of stateful computation. PyTorch provides a robust library of modules and makes it simple to define new custom modules, allowing for easy construction of elaborate, multi-layer neural networks.
How do I install a torch in Jupyter notebook? ›- Install miniconda. ...
- Create a conda environment. ...
- Activate the conda environment. ...
- Install python packages in conda environment. ...
- Setting up CUDA. ...
- Configuring Jupyter. ...
- Running jupyter lab remotely. ...
- Verify that everything works.
The 'module not found' error is a syntax error that appears when the static import statement cannot find the file at the declared path. This common syntax error is caused by letter-casing inconsistencies that are present in your filename(s) between your repository and local machine, or both.
What is torch Module? ›PyTorch uses modules to represent neural networks. Modules are: Building blocks of stateful computation. PyTorch provides a robust library of modules and makes it simple to define new custom modules, allowing for easy construction of elaborate, multi-layer neural networks.
How do I install torch on Windows 10? ›
- Install Python. https://www.python.org/downloads/
- update pip. python -m pip install --upgrade pip.
- install numpy first. according to PyTorch official guide recommand that install numpy first. ...
- no cuda PyTorch 0.4.1. ...
- Torchvision.
This is caused by the fact that the version of Python you're running your script with is not configured to search for modules where you've installed them. This happens when you use the wrong installation of pip to install packages.
How do I enable a Python module? ›You can install modules or packages with the Python package manager (pip). To install a module system wide, open a terminal and use the pip command. If you type the code below it will install the module. That will install a Python module automatically.
How do I install all Python modules? ›- Install launcher for all users.
- Add Python to the PATH.
- Install pip (which allows Python to install other packages)
- Install tk/tcl and IDLE.
- Install the Python test suite.
- Install py launcher for all users.
- Associate files with Python.
- Create shortcuts for installed applications.
Install PyTorch
The recommended Python version is 3.7.6+ and 3.8.1+.
- Install Anaconda.
- Open Anaconda Prompt (NOT Anaconda Navigator)
- conda install pytorch -c pytorch.
- pip install torchvision.
- Add environment to ipykernel.
Torch is an open-source machine learning library, a scientific computing framework, and a script language based on the Lua programming language. It provides a wide range of algorithms for deep learning, and uses the scripting language LuaJIT, and an underlying C implementation.
Why do we use torch in Python? ›Torch is an open source ML library used for creating deep neural networks and is written in the Lua scripting language. It's one of the preferred platforms for deep learning research. The framework is built to speed up the process between research prototyping and deployment.
How does torch load work? ›torch. load() uses Python's unpickling facilities but treats storages, which underlie tensors, specially. They are first deserialized on the CPU and are then moved to the device they were saved from. If this fails (e.g. because the run time system doesn't have certain devices), an exception is raised.
How do I add torch? ›- Swipe down from the top of the screen to reveal the Quick Settings icons.
- Find the "Flashlight" icon and tap it. The flashlight should come on instantly.
- Tap the Flashlight icon a second time to turn it off.
Where is the torch settings? ›
Open the Settings App, then go to System → Gestures → Quick Tap. Turn on the feature by pressing the Use Quick Tap button. Scroll down, then tap the Toggle flashlight option.