layout: default
navsection: sdk
navmenu: Python
-title: "Python SDK"
-
+title: "Installation"
...
+{% comment %}
+Copyright (C) The Arvados Authors. All rights reserved.
-The Python SDK provides access from Python to the Arvados API and Keep. It also includes a number of command line tools for using and administering Arvados and Keep, and some conveniences for use in Crunch scripts; see "Crunch utility libraries":crunch-utility-libraries.html for details.
-
-h3. Installation
+SPDX-License-Identifier: CC-BY-SA-3.0
+{% endcomment %}
-If you are logged in to an Arvados VM, the Python SDK should be installed.
+The Python SDK provides access from Python to the Arvados API and Keep, along with a number of command line tools for using and administering Arvados and Keep.
-To use the Python SDK elsewhere, you can install from a distribution package, PyPI, or source.
+h2. Installation
-{% include 'notebox_begin' %}
-The Python SDK requires Python 2.7.
-{% include 'notebox_end' %}
+If you are logged in to an Arvados VM, the Python SDK should be installed.
-h4. Option 1: Install from distribution packages
+To use the Python SDK elsewhere, you can install from PyPI or a distribution package.
-First, "add the appropriate package repository for your distribution":{{ site.baseurl }}/install/install-manual-prerequisites.html#repos.
+As of Arvados 2.2, the Python SDK requires Python 3.6+. The last version to support Python 2.7 is Arvados 2.0.4.
-{% assign rh_version = "6" %}
-{% include 'note_python_sc' %}
+h2. Option 1: Install from a distribution package
-On CentOS 6 and RHEL 6:
+This installation method is recommended to make the CLI tools available system-wide. It can coexist with the installation method described in option 2, below.
-<notextile>
-<pre><code>~$ <span class="userinput">sudo yum install python27-python-arvados-python-client</code>
-</code></pre>
-</notextile>
+First, configure the "Arvados package repositories":../../install/packages.html
-On other Red Hat-based systems:
+{% assign arvados_component = 'python3-arvados-python-client' %}
-<notextile>
-<pre><code>~$ <span class="userinput">sudo yum install python-arvados-python-client</code>
-</code></pre>
-</notextile>
+{% include 'install_packages' %}
-On Debian-based systems:
+h2. Option 2: Install with pip
-<notextile>
-<pre><code>~$ <span class="userinput">sudo apt-get install python-arvados-python-client</code>
-</code></pre>
-</notextile>
+This installation method is recommended to use the SDK in your own Python programs. If installed into a @virtualenv@, it can coexist with the system-wide installation method from a distribution package.
-h4. Option 2: Install with pip
+Run @pip install arvados-python-client@ in an appropriate installation environment, such as a @virtualenv@.
-Run @pip-2.7 install arvados-python-client@ in an appropriate installation environment, such as a virtualenv.
+Note:
-If your version of @pip@ is 1.4 or newer, the @pip install@ command might give an error: "Could not find a version that satisfies the requirement arvados-python-client". If this happens, try @pip-2.7 install --pre arvados-python-client@.
+The SDK uses @pycurl@ which depends on the @libcurl@ C library. To build the module you may have to first install additional packages. On Debian 10 this is:
-h4. Option 3: Install from source
+<pre>
+$ apt-get install git build-essential python3-dev libcurl4-openssl-dev libssl-dev
+</pre>
-Install the @python-setuptools@ package from your distribution. Then run the following:
+If your version of @pip@ is 1.4 or newer, the @pip install@ command might give an error: "Could not find a version that satisfies the requirement arvados-python-client". If this happens, try @pip install --pre arvados-python-client@.
-<notextile>
-<pre><code>~$ <span class="userinput">git clone https://github.com/curoverse/arvados.git</span>
-~$ <span class="userinput">cd arvados/sdk/python</span>
-~/arvados/sdk/python$ <span class="userinput">python2.7 setup.py install</span>
-</code></pre>
-</notextile>
+h2. Test installation
-You may optionally run the final installation command in a virtualenv, or with the @--user@ option.
+If the SDK is installed and your @ARVADOS_API_HOST@ and @ARVADOS_API_TOKEN@ environment variables are set up correctly (see "api-tokens":{{site.baseurl}}/user/reference/api-tokens.html for details), @import arvados@ should produce no errors.
-h4. Test installation
-
-If the SDK is installed and your @ARVADOS_API_HOST@ and @ARVADOS_API_TOKEN@ environment variables are set up correctly (see "api-tokens":{{site.baseurl}}/user/reference/api-tokens.html for details), @import arvados@ should produce no errors:
+If you installed with pip (option 1, above):
<notextile>
-<pre>~$ <code class="userinput">python2.7</code>
-Python 2.7.4 (default, Sep 26 2013, 03:20:26)
-[GCC 4.7.3] on linux2
+<pre>~$ <code class="userinput">python</code>
+Python 3.7.3 (default, Jul 25 2020, 13:03:44)
+[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> <code class="userinput">import arvados</code>
>>> <code class="userinput">arvados.api('v1')</code>
</pre>
</notextile>
-h3. Examples
-
-Get the User object for the current user:
-
-<notextile>
-<pre><code class="userinput">current_user = arvados.api('v1').users().current().execute()
-</code></pre>
-</notextile>
-
-Get the UUID of an object that was retrieved using the SDK:
-
-<notextile>
-<pre><code class="userinput">my_uuid = current_user['uuid']
-</code></pre>
-</notextile>
-
-Retrieve an object by ID:
-
-<notextile>
-<pre><code class="userinput">some_user = arvados.api('v1').users().get(uuid=my_uuid).execute()
-</code></pre>
-</notextile>
-
-Create an object:
-
-<notextile>
-<pre><code class="userinput">test_link = arvados.api('v1').links().create(
- body={'link_class':'test','name':'test'}).execute()
-</code></pre>
-</notextile>
-
-Update an object:
-
-<notextile>
-<pre><code class="userinput">arvados.api('v1').links().update(
- uuid=test_link['uuid'],
- body={'properties':{'foo':'bar'}}).execute()
-</code></pre>
-</notextile>
-
-Get a list of objects:
+If you installed from a distribution package (option 2): the package includes a virtualenv, which means the correct Python environment needs to be loaded before the Arvados SDK can be imported. This can be done by activating the virtualenv first:
-<notextile>
-<pre><code class="userinput">repos = arvados.api('v1').repositories().list().execute()
-len(repos['items'])</code>
-2
-<code class="userinput">repos['items'][0]['uuid']</code>
-u'qr1hi-s0uqq-kg8cawglrf74bmw'
-</code></pre>
-</notextile>
-
-h3. Notes
-
-The general form of an API call is:
+{% include 'notebox_begin_warning' %}
+If you are on Ubuntu 18.04, please note that the Arvados packages that use Python depend on the python-3.8 package. This means they are installed under @/usr/share/python3.8@, not @/usr/share/python3@. You will need to update the commands below accordingly.
+{% include 'notebox_end' %}
<notextile>
-<pre><code class="userinput">arvados.api(<i>api_version</i>).<i>plural_resource_type</i>().<i>api_method</i>(<i>parameter</i>=<i>value</i>, ...).execute()
-</code></pre>
+<pre>~$ <code class="userinput">source /usr/share/python3/dist/python3-arvados-python-client/bin/activate</code>
+(python-arvados-python-client) ~$ <code class="userinput">python</code>
+Python 3.7.3 (default, Jul 25 2020, 13:03:44)
+[GCC 8.3.0] on linux
+Type "help", "copyright", "credits" or "license" for more information.
+>>> <code class="userinput">import arvados</code>
+>>> <code class="userinput">arvados.api('v1')</code>
+<apiclient.discovery.Resource object at 0x233bb50>
+</pre>
</notextile>
-Many API methods accept a parameter whose name is the same as the resource type. For example, @links.create@ accepts a parameter called @link@. This parameter should be given as @body@.
+Or alternatively, by using the Python executable from the virtualenv directly:
<notextile>
-<pre><code class="userinput">arvados.api('v1').links().create(
- uuid=test_link['uuid'],
- body={'properties':{'foo':'bar'}}).execute()
-</code></pre>
+<pre>~$ <code class="userinput">/usr/share/python3/dist/python3-arvados-python-client/bin/python</code>
+Python 3.7.3 (default, Jul 25 2020, 13:03:44)
+[GCC 8.3.0] on linux
+Type "help", "copyright", "credits" or "license" for more information.
+>>> <code class="userinput">import arvados</code>
+>>> <code class="userinput">arvados.api('v1')</code>
+<apiclient.discovery.Resource object at 0x233bb50>
+</pre>
</notextile>
-One way to make API calls slightly less verbose is:
-
-<notextile>
-<pre><code class="userinput">arv = arvados.api('v1')
-j = arv.jobs().list().execute()
-</code></pre>
-</notextile>
+h2. Usage
-The SDK retrieves the list of API methods from the server at run time. Therefore, the set of available methods is determined by the server version rather than the SDK version.
+Check out the "API client overview":api-client.html and "cookbook":cookbook.html.
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