Note: A bugfix release, 2.7.16, is currently available. Its use is recommended.
Python 2.7.0 was released on July 3rd, 2010.
Python 2.7 is scheduled to be the last major version in the 2.x series before itmoves into an extended maintenance period. This release contains many of thefeatures that were first released in Python 3.1. Improvements in this releaseinclude:
Openmpi Mac: 1.6.3: An open source Message Passing Interface implementation / 3-clause BSD: openpyxl: 2.4.7: A Python library to read/write Excel 2010 xlsx/xlsm files / MIT: openssl: 1.0.2l: OpenSSL is an open-source implementation of the SSL and TLS protocols / Apache-style: orange3: 3.4.1. Mac (64 bit x86) SHA256: MAC OS 10.9 or newer: NuGet (64 bit x86) Not included.NET Core 2.0: Windows (64 bit x86) SHA256: Windows 8, Server 2012 or newer: Windows (32 bit x86) SHA256: Windows 8, Server 2012 or newer. Note: A bugfix release, 2.7.16, is currently available.Its use is recommended. Python 2.7.0 was released on July 3rd, 2010. Python 2.7 is scheduled to be the last major version in the 2.x series before it moves into an extended maintenance period. Click to see our best Video content. Take A Sneak Peak At The Movies Coming Out This Week (8/12) Iconic quotes from the cast of The Office. To install Anaconda, you will use the 64-bit graphical installer for PyTorch 3.x. Click on the installer link and select Run. Anaconda will download and the installer prompt will be presented to you. The default options are generally sane. If you installed Python by any of the recommended ways above, pip will have already been installed.
- An ordered dictionary type
- New unittest features including test skipping, new assert methods, and testdiscovery
- A much faster io module
- Automatic numbering of fields in the str.format() method
- Float repr improvements backported from 3.x
- Tile support for Tkinter
- A backport of the memoryview object from 3.x
- Set literals
- Set and dictionary comprehensions
- Dictionary views
- New syntax for nested with statements
- The sysconfig module
See these resources for further information:
- Change log for this release.
- Report bugs at http://bugs.python.org.
- Help fund Python and its community.
This is a production release. Please report any bugs you encounter.
We currently support these formats for download:
- Mac Installer disk image (2.7.0) for OS X 10.5 and later(sig). It contains code for PPC, i386, and x86-64.
- 32-bit Mac Installer disk image (2.7.0) for OS X 10.3 and later(sig).
The source tarballs are signed with Benjamin Peterson's key (fingerprint: 12EF3DC3 8047 DA38 2D18 A5B9 99CD EA9D A413 5B38). The Windows installer was signedby Martin von Löwis' public key, which has a key id of 7D9DC8D2. The Macinstallers were signed with Ronald Oussoren's key, which has a key id ofE6DF025C. The public keys are located on the download page.
MD5 checksums and sizes of the released files:
[1] | The binaries for AMD64 will also work on processors that implement the Intel 64 architecture (formerly EM64T), i.e. the architecture that Microsoft calls x64, and AMD called x86-64 before calling it AMD64. They will not work on Intel Itanium Processors (formerly IA-64). |
Start Locally
Select your preferences and run the install command. 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, 1.9 builds that are generated nightly. Please ensure that you have met the prerequisites below (e.g., numpy), depending on your package manager. Anaconda is our recommended package manager since it installs all dependencies. You can also install previous versions of PyTorch. Note that LibTorch is only available for C++.
PyTorch can be installed and used on macOS. Depending on your system and compute requirements, your experience with PyTorch on a Mac may vary in terms of processing time. It is recommended, but not required, that your Mac have an NVIDIA GPU in order to harness the full power of PyTorch’s CUDAsupport.
Currently, CUDA support on macOS is only available by building PyTorch from source
Prerequisites
macOS Version
PyTorch is supported on macOS 10.10 (Yosemite) or above.
Python
It is recommended that you use Python 3.5 or greater, which can be installed either through the Anaconda package manager (see below), Homebrew, or the Python website.
Package Manager
To install the PyTorch binaries, you will need to use one of two supported package managers: Anaconda or pip. Anaconda is the recommended package manager as it will provide you all of the PyTorch dependencies in one, sandboxed install, including Python.
Anaconda
To install Anaconda, you can download graphical installer or use the command-line installer. If you use the command-line installer, you can right-click on the installer link, select Copy Link Address
, and then use the following commands:
pip
Python 3
If you installed Python via Homebrew or the Python website, pip
was installed with it. If you installed Python 3.x, then you will be using the command pip3
.
Tip: If you want to use just the command pip
, instead of pip3
, you can symlink pip
to the pip3
binary.
Installation
Anaconda
Anaconda Download Macos Catalina
To install PyTorch via Anaconda, use the following conda command:
pip
To install PyTorch via pip, use one of the following two commands, depending on your Python version:
Verification
Download Anaconda For Mac Os Bootable
To ensure that PyTorch was installed correctly, we can verify the installation by running sample PyTorch code. Here we will construct a randomly initialized tensor.
The output should be something similar to:
Building from source
For the majority of PyTorch users, installing from a pre-built binary via a package manager will provide the best experience. However, there are times when you may want to install the bleeding edge PyTorch code, whether for testing or actual development on the PyTorch core. To install the latest PyTorch code, you will need to build PyTorch from source.
You will also need to build from source if you want CUDA support.
Prerequisites
- Install Anaconda
- Install CUDA, if your machine has a CUDA-enabled GPU.
- Follow the steps described here: https://github.com/pytorch/pytorch#from-source
You can verify the installation as described above.
PyTorch can be installed and used on various Linux distributions. Depending on your system and compute requirements, your experience with PyTorch on Linux may vary in terms of processing time. It is recommended, but not required, that your Linux system has an NVIDIA GPU in order to harness the full power of PyTorch’s CUDAsupport..
Prerequisites
Supported Linux Distributions
PyTorch is supported on Linux distributions that use glibc >= v2.17, which include the following:
- Arch Linux, minimum version 2012-07-15
- CentOS, minimum version 7.3-1611
- Debian, minimum version 8.0
- Fedora, minimum version 24
- Mint, minimum version 14
- OpenSUSE, minimum version 42.1
- PCLinuxOS, minimum version 2014.7
- Slackware, minimum version 14.2
- Ubuntu, minimum version 13.04
The install instructions here will generally apply to all supported Linux distributions. An example difference is that your distribution may support yum
instead of apt
. The specific examples shown were run on an Ubuntu 18.04 machine.
Python
Python 3.6 or greater is generally installed by default on any of our supported Linux distributions, which meets our recommendation.
Tip: By default, you will have to use the command python3
to run Python. If you want to use just the command python
, instead of python3
, you can symlink python
to the python3
binary.
However, if you want to install another version, there are multiple ways:
- APT
If you decide to use APT, you can run the following command to install it:
It is recommended that you use Python 3.6, 3.7 or 3.8, which can be installed via any of the mechanisms above .
If you use Anaconda to install PyTorch, it will install a sandboxed version of Python that will be used for running PyTorch applications.
Package Manager
To install the PyTorch binaries, you will need to use one of two supported package managers: Anaconda or pip. Anaconda is the recommended package manager as it will provide you all of the PyTorch dependencies in one, sandboxed install, including Python.
Anaconda
To install Anaconda, you will use the command-line installer. Right-click on the 64-bit installer link, select Copy Link Location
, and then use the following commands:
You may have to open a new terminal or re-source your ~/.bashrc
to get access to the conda
command.
pip
Python 3
While Python 3.x is installed by default on Linux, pip
is not installed by default.
Tip: If you want to use just the command pip
, instead of pip3
, you can symlink pip
to the pip3
binary.
Installation
Anaconda
No CUDA
To install PyTorch via Anaconda, and do not have a CUDA-capable system or do not require CUDA, in the above selector, choose OS: Linux, Package: Conda and CUDA: None.Then, run the command that is presented to you.
With CUDA
To install PyTorch via Anaconda, and you do have a CUDA-capable system, in the above selector, choose OS: Linux, Package: Conda and the CUDA version suited to your machine. Often, the latest CUDA version is better.Then, run the command that is presented to you.
pip
No CUDA
To install PyTorch via pip, and do not have a CUDA-capable system or do not require CUDA, in the above selector, choose OS: Linux, Package: Pip and CUDA: None.Then, run the command that is presented to you.
With CUDA
To install PyTorch via pip, and do have a CUDA-capable system, in the above selector, choose OS: Linux, Package: Pip and the CUDA version suited to your machine. Often, the latest CUDA version is better.Then, run the command that is presented to you.
Verification
To ensure that PyTorch was installed correctly, we can verify the installation by running sample PyTorch code. Here we will construct a randomly initialized tensor.
The output should be something similar to:
Additionally, to check if your GPU driver and CUDA is enabled and accessible by PyTorch, run the following commands to return whether or not the CUDA driver is enabled:
Building from source
For the majority of PyTorch users, installing from a pre-built binary via a package manager will provide the best experience. However, there are times when you may want to install the bleeding edge PyTorch code, whether for testing or actual development on the PyTorch core. To install the latest PyTorch code, you will need to build PyTorch from source.
Prerequisites
- Install Anaconda[#anaconda]
- Install CUDA, if your machine has a CUDA-enabled GPU.
- Follow the steps described here: https://github.com/pytorch/pytorch#from-source
You can verify the installation as described above.
PyTorch can be installed and used on various Windows distributions. Depending on your system and compute requirements, your experience with PyTorch on Windows may vary in terms of processing time. It is recommended, but not required, that your Windows system has an NVIDIA GPU in order to harness the full power of PyTorch’s CUDAsupport.
Prerequisites
Supported Windows Distributions
PyTorch is supported on the following Windows distributions:
- Windows 7 and greater; Windows 10 or greater recommended.
- Windows Server 2008 r2 and greater
The install instructions here will generally apply to all supported Windows distributions. The specific examples shown will be run on a Windows 10 Enterprise machine
Python
Currently, PyTorch on Windows only supports Python 3.x; Python 2.x is not supported.
As it is not installed by default on Windows, there are multiple ways to install Python:
If you use Anaconda to install PyTorch, it will install a sandboxed version of Python that will be used for running PyTorch applications.
If you decide to use Chocolatey, and haven’t installed Chocolatey yet, ensure that you are running your command prompt as an administrator.
For a Chocolatey-based install, run the following command in an administrative command prompt:
Package Manager
To install the PyTorch binaries, you will need to use at least one of two supported package managers: Anaconda and pip. Anaconda is the recommended package manager as it will provide you all of the PyTorch dependencies in one, sandboxed install, including Python and pip.
Anaconda
To install Anaconda, you will use the 64-bit graphical installer for PyTorch 3.x. Click on the installer link and select Run
. Anaconda will download and the installer prompt will be presented to you. The default options are generally sane.
pip
If you installed Python by any of the recommended ways above, pip will have already been installed for you.
Installation
Anaconda
To install PyTorch with Anaconda, you will need to open an Anaconda prompt via Start | Anaconda3 | Anaconda Prompt
.
No CUDA
To install PyTorch via Anaconda, and do not have a CUDA-capable system or do not require CUDA, in the above selector, choose OS: Windows, Package: Conda and CUDA: None.Then, run the command that is presented to you.
With CUDA
To install PyTorch via Anaconda, and you do have a CUDA-capable system, in the above selector, choose OS: Windows, Package: Conda and the CUDA version suited to your machine. Often, the latest CUDA version is better.Then, run the command that is presented to you.
pip
No CUDA
To install PyTorch via pip, and do not have a CUDA-capable system or do not require CUDA, in the above selector, choose OS: Windows, Package: Pip and CUDA: None.Then, run the command that is presented to you.
With CUDA
To install PyTorch via pip, and do have a CUDA-capable system, in the above selector, choose OS: Windows, Package: Pip and the CUDA version suited to your machine. Often, the latest CUDA version is better.Then, run the command that is presented to you.
Verification
To ensure that PyTorch was installed correctly, we can verify the installation by running sample PyTorch code. Here we will construct a randomly initialized tensor.
From the command line, type:
then enter the following code:
The output should be something similar to:
Additionally, to check if your GPU driver and CUDA is enabled and accessible by PyTorch, run the following commands to return whether or not the CUDA driver is enabled:
Building from source
For the majority of PyTorch users, installing from a pre-built binary via a package manager will provide the best experience. However, there are times when you may want to install the bleeding edge PyTorch code, whether for testing or actual development on the PyTorch core. To install the latest PyTorch code, you will need to build PyTorch from source.
Prerequisites
- Install Anaconda
- Install CUDA, if your machine has a CUDA-enabled GPU.
- If you want to build on Windows, Visual Studio with MSVC toolset, and NVTX are also needed. The exact requirements of those dependencies could be found out here.
- Follow the steps described here: https://github.com/pytorch/pytorch#from-source
You can verify the installation as described above.