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Code Editor : platform.html

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<title>15.15. platform — Access to underlying platform’s identifying data &#8212; Python 2.7.18 documentation</title>
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 <section id="module-platform">
<h1>15.15. <a class="reference internal" href="#module-platform" title="platform: Retrieves as much platform identifying data as possible."><code class="xref py py-mod docutils literal notranslate">platform</code></a> — Access to underlying platform’s identifying data<a class="headerlink" href="#module-platform" title="Permalink to this headline">¶</a></h1>
<div class="versionadded">
New in version 2.3.
</div>
Source code: <a class="reference external" href="https://github.com/python/cpython/tree/2.7/Lib/platform.py">Lib/platform.py</a>
<hr class="docutils" />
<div class="admonition note">
Note
Specific platforms listed alphabetically, with Linux included in the Unix
section.
</div>
<section id="cross-platform">
<h2>15.15.1. Cross Platform<a class="headerlink" href="#cross-platform" title="Permalink to this headline">¶</a></h2>
<dl class="py function">
<dt class="sig sig-object py" id="platform.architecture">
platform.architecture(executable=sys.executable, bits='', linkage='')<a class="headerlink" href="#platform.architecture" title="Permalink to this definition">¶</a></dt>
<dd>Queries the given executable (defaults to the Python interpreter binary) for
various architecture information.
Returns a tuple <code class="docutils literal notranslate">(bits, linkage)</code> which contain information about the bit
architecture and the linkage format used for the executable. Both values are
returned as strings.
Values that cannot be determined are returned as given by the parameter presets.
If bits is given as <code class="docutils literal notranslate">''</code>, the <code class="docutils literal notranslate">sizeof(pointer)</code> (or
<code class="docutils literal notranslate">sizeof(long)</code> on Python version &lt; 1.5.2) is used as indicator for the
supported pointer size.
The function relies on the system’s <code class="file docutils literal notranslate">file</code> command to do the actual work.
This is available on most if not all Unix platforms and some non-Unix platforms
and then only if the executable points to the Python interpreter. Reasonable
defaults are used when the above needs are not met.
<div class="admonition note">
Note
On Mac OS X (and perhaps other platforms), executable files may be
universal files containing multiple architectures.
To get at the “64-bitness” of the current interpreter, it is more
reliable to query the <a class="reference internal" href="sys.html#sys.maxsize" title="sys.maxsize"><code class="xref py py-attr docutils literal notranslate">sys.maxsize</code></a> attribute:
<div class="highlight-default notranslate"><div class="highlight"><pre>is_64bits = sys.maxsize &gt; 2**32
</pre></div>
</div>
</div>
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.machine">
platform.machine()<a class="headerlink" href="#platform.machine" title="Permalink to this definition">¶</a></dt>
<dd>Returns the machine type, e.g. <code class="docutils literal notranslate">'i386'</code>. An empty string is returned if the
value cannot be determined.
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.node">
platform.node()<a class="headerlink" href="#platform.node" title="Permalink to this definition">¶</a></dt>
<dd>Returns the computer’s network name (may not be fully qualified!). An empty
string is returned if the value cannot be determined.
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.platform">
platform.platform(aliased=0, terse=0)<a class="headerlink" href="#platform.platform" title="Permalink to this definition">¶</a></dt>
<dd>Returns a single string identifying the underlying platform with as much useful
information as possible.
The output is intended to be human readable rather than machine parseable. It
may look different on different platforms and this is intended.
If aliased is true, the function will use aliases for various platforms that
report system names which differ from their common names, for example SunOS will
be reported as Solaris. The <a class="reference internal" href="#platform.system_alias" title="platform.system_alias"><code class="xref py py-func docutils literal notranslate">system_alias()</code></a> function is used to implement
this.
Setting terse to true causes the function to return only the absolute minimum
information needed to identify the platform.
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.processor">
platform.processor()<a class="headerlink" href="#platform.processor" title="Permalink to this definition">¶</a></dt>
<dd>Returns the (real) processor name, e.g. <code class="docutils literal notranslate">'amdk6'</code>.
An empty string is returned if the value cannot be determined. Note that many
platforms do not provide this information or simply return the same value as for
<a class="reference internal" href="#platform.machine" title="platform.machine"><code class="xref py py-func docutils literal notranslate">machine()</code></a>. NetBSD does this.
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.python_build">
platform.python_build()<a class="headerlink" href="#platform.python_build" title="Permalink to this definition">¶</a></dt>
<dd>Returns a tuple <code class="docutils literal notranslate">(buildno, builddate)</code> stating the Python build number and
date as strings.
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.python_compiler">
platform.python_compiler()<a class="headerlink" href="#platform.python_compiler" title="Permalink to this definition">¶</a></dt>
<dd>Returns a string identifying the compiler used for compiling Python.
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.python_branch">
platform.python_branch()<a class="headerlink" href="#platform.python_branch" title="Permalink to this definition">¶</a></dt>
<dd>Returns a string identifying the Python implementation SCM branch.
<div class="versionadded">
New in version 2.6.
</div>
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.python_implementation">
platform.python_implementation()<a class="headerlink" href="#platform.python_implementation" title="Permalink to this definition">¶</a></dt>
<dd>Returns a string identifying the Python implementation. Possible return values
are: ‘CPython’, ‘IronPython’, ‘Jython’, ‘PyPy’.
<div class="versionadded">
New in version 2.6.
</div>
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.python_revision">
platform.python_revision()<a class="headerlink" href="#platform.python_revision" title="Permalink to this definition">¶</a></dt>
<dd>Returns a string identifying the Python implementation SCM revision.
<div class="versionadded">
New in version 2.6.
</div>
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.python_version">
platform.python_version()<a class="headerlink" href="#platform.python_version" title="Permalink to this definition">¶</a></dt>
<dd>Returns the Python version as string <code class="docutils literal notranslate">'major.minor.patchlevel'</code>.
Note that unlike the Python <code class="docutils literal notranslate">sys.version</code>, the returned value will always
include the patchlevel (it defaults to 0).
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.python_version_tuple">
platform.python_version_tuple()<a class="headerlink" href="#platform.python_version_tuple" title="Permalink to this definition">¶</a></dt>
<dd>Returns the Python version as tuple <code class="docutils literal notranslate">(major, minor, patchlevel)</code> of strings.
Note that unlike the Python <code class="docutils literal notranslate">sys.version</code>, the returned value will always
include the patchlevel (it defaults to <code class="docutils literal notranslate">'0'</code>).
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.release">
platform.release()<a class="headerlink" href="#platform.release" title="Permalink to this definition">¶</a></dt>
<dd>Returns the system’s release, e.g. <code class="docutils literal notranslate">'2.2.0'</code> or <code class="docutils literal notranslate">'NT'</code> An empty string is
returned if the value cannot be determined.
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.system">
platform.system()<a class="headerlink" href="#platform.system" title="Permalink to this definition">¶</a></dt>
<dd>Returns the system/OS name, e.g. <code class="docutils literal notranslate">'Linux'</code>, <code class="docutils literal notranslate">'Windows'</code>, or <code class="docutils literal notranslate">'Java'</code>. An
empty string is returned if the value cannot be determined.
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.system_alias">
platform.system_alias(system, release, version)<a class="headerlink" href="#platform.system_alias" title="Permalink to this definition">¶</a></dt>
<dd>Returns <code class="docutils literal notranslate">(system, release, version)</code> aliased to common marketing names used
for some systems. It also does some reordering of the information in some cases
where it would otherwise cause confusion.
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.version">
platform.version()<a class="headerlink" href="#platform.version" title="Permalink to this definition">¶</a></dt>
<dd>Returns the system’s release version, e.g. <code class="docutils literal notranslate">'#3 on degas'</code>. An empty string is
returned if the value cannot be determined.
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.uname">
platform.uname()<a class="headerlink" href="#platform.uname" title="Permalink to this definition">¶</a></dt>
<dd>Fairly portable uname interface. Returns a tuple of strings <code class="docutils literal notranslate">(system, node,
release, version, machine, processor)</code> identifying the underlying platform.
Note that unlike the <a class="reference internal" href="os.html#os.uname" title="os.uname"><code class="xref py py-func docutils literal notranslate">os.uname()</code></a> function this also returns possible
processor information as additional tuple entry.
Entries which cannot be determined are set to <code class="docutils literal notranslate">''</code>.
</dd></dl>

</section>
<section id="java-platform">
<h2>15.15.2. Java Platform<a class="headerlink" href="#java-platform" title="Permalink to this headline">¶</a></h2>
<dl class="py function">
<dt class="sig sig-object py" id="platform.java_ver">
platform.java_ver(release='', vendor='', vminfo=('', '', ''), osinfo=('', '', ''))<a class="headerlink" href="#platform.java_ver" title="Permalink to this definition">¶</a></dt>
<dd>Version interface for Jython.
Returns a tuple <code class="docutils literal notranslate">(release, vendor, vminfo, osinfo)</code> with vminfo being a
tuple <code class="docutils literal notranslate">(vm_name, vm_release, vm_vendor)</code> and osinfo being a tuple
<code class="docutils literal notranslate">(os_name, os_version, os_arch)</code>. Values which cannot be determined are set to
the defaults given as parameters (which all default to <code class="docutils literal notranslate">''</code>).
</dd></dl>

</section>
<section id="windows-platform">
<h2>15.15.3. Windows Platform<a class="headerlink" href="#windows-platform" title="Permalink to this headline">¶</a></h2>
<dl class="py function">
<dt class="sig sig-object py" id="platform.win32_ver">
platform.win32_ver(release='', version='', csd='', ptype='')<a class="headerlink" href="#platform.win32_ver" title="Permalink to this definition">¶</a></dt>
<dd>Get additional version information from the Windows Registry and return a tuple
<code class="docutils literal notranslate">(release, version, csd, ptype)</code> referring to OS release, version number,
CSD level (service pack) and OS type (multi/single processor).
As a hint: ptype is <code class="docutils literal notranslate">'Uniprocessor Free'</code> on single processor NT machines
and <code class="docutils literal notranslate">'Multiprocessor Free'</code> on multi processor machines. The ‘Free’ refers
to the OS version being free of debugging code. It could also state ‘Checked’
which means the OS version uses debugging code, i.e. code that checks arguments,
ranges, etc.
<div class="admonition note">
Note
This function works best with Mark Hammond’s
<code class="xref py py-mod docutils literal notranslate">win32all</code> package installed, but also on Python 2.3 and
later (support for this was added in Python 2.6). It obviously
only runs on Win32 compatible platforms.
</div>
</dd></dl>

<section id="win95-98-specific">
<h3>15.15.3.1. Win95/98 specific<a class="headerlink" href="#win95-98-specific" title="Permalink to this headline">¶</a></h3>
<dl class="py function">
<dt class="sig sig-object py" id="platform.popen">
platform.popen(cmd, mode='r', bufsize=None)<a class="headerlink" href="#platform.popen" title="Permalink to this definition">¶</a></dt>
<dd>Portable <a class="reference internal" href="#platform.popen" title="platform.popen"><code class="xref py py-func docutils literal notranslate">popen()</code></a> interface. Find a working popen implementation
preferring <code class="xref py py-func docutils literal notranslate">win32pipe.popen()</code>. On Windows NT, <code class="xref py py-func docutils literal notranslate">win32pipe.popen()</code>
should work; on Windows 9x it hangs due to bugs in the MS C library.
</dd></dl>

</section>
</section>
<section id="mac-os-platform">
<h2>15.15.4. Mac OS Platform<a class="headerlink" href="#mac-os-platform" title="Permalink to this headline">¶</a></h2>
<dl class="py function">
<dt class="sig sig-object py" id="platform.mac_ver">
platform.mac_ver(release='', versioninfo=('', '', ''), machine='')<a class="headerlink" href="#platform.mac_ver" title="Permalink to this definition">¶</a></dt>
<dd>Get Mac OS version information and return it as tuple <code class="docutils literal notranslate">(release, versioninfo,
machine)</code> with versioninfo being a tuple <code class="docutils literal notranslate">(version, dev_stage,
non_release_version)</code>.
Entries which cannot be determined are set to <code class="docutils literal notranslate">''</code>. All tuple entries are
strings.
</dd></dl>

</section>
<section id="unix-platforms">
<h2>15.15.5. Unix Platforms<a class="headerlink" href="#unix-platforms" title="Permalink to this headline">¶</a></h2>
<dl class="py function">
<dt class="sig sig-object py" id="platform.dist">
platform.dist(distname='', version='', id='', supported_dists=('SuSE', 'debian', 'redhat', 'mandrake', ...))<a class="headerlink" href="#platform.dist" title="Permalink to this definition">¶</a></dt>
<dd>This is an old version of the functionality now provided by
<a class="reference internal" href="#platform.linux_distribution" title="platform.linux_distribution"><code class="xref py py-func docutils literal notranslate">linux_distribution()</code></a>. For new code, please use the
<a class="reference internal" href="#platform.linux_distribution" title="platform.linux_distribution"><code class="xref py py-func docutils literal notranslate">linux_distribution()</code></a>.
The only difference between the two is that <code class="docutils literal notranslate">dist()</code> always
returns the short name of the distribution taken from the
<code class="docutils literal notranslate">supported_dists</code> parameter.
<div class="deprecated">
Deprecated since version 2.6.
</div>
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.linux_distribution">
platform.linux_distribution(distname='', version='', id='', supported_dists=('SuSE', 'debian', 'redhat', 'mandrake', ...), full_distribution_name=1)<a class="headerlink" href="#platform.linux_distribution" title="Permalink to this definition">¶</a></dt>
<dd>Tries to determine the name of the Linux OS distribution name.
<code class="docutils literal notranslate">supported_dists</code> may be given to define the set of Linux distributions to
look for. It defaults to a list of currently supported Linux distributions
identified by their release file name.
If <code class="docutils literal notranslate">full_distribution_name</code> is true (default), the full distribution read
from the OS is returned. Otherwise the short name taken from
<code class="docutils literal notranslate">supported_dists</code> is used.
Returns a tuple <code class="docutils literal notranslate">(distname,version,id)</code> which defaults to the args given as
parameters. <code class="docutils literal notranslate">id</code> is the item in parentheses after the version number. It
is usually the version codename.
<div class="admonition note">
Note
This function is deprecated since Python 3.5 and removed in Python 3.8.
See alternative like the <a class="reference external" href="https://pypi.org/project/distro">distro</a> package.
</div>
<div class="versionadded">
New in version 2.6.
</div>
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="platform.libc_ver">
platform.libc_ver(executable=sys.executable, lib='', version='', chunksize=2048)<a class="headerlink" href="#platform.libc_ver" title="Permalink to this definition">¶</a></dt>
<dd>Tries to determine the libc version against which the file executable (defaults
to the Python interpreter) is linked. Returns a tuple of strings <code class="docutils literal notranslate">(lib,
version)</code> which default to the given parameters in case the lookup fails.
Note that this function has intimate knowledge of how different libc versions
add symbols to the executable is probably only usable for executables compiled
using gcc.
The file is read and scanned in chunks of chunksize bytes.
</dd></dl>

</section>
</section>

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 <ul>
<li><a class="reference internal" href="#">15.15. <code class="xref py py-mod docutils literal notranslate">platform</code> — Access to underlying platform’s identifying data</a><ul>
<li><a class="reference internal" href="#cross-platform">15.15.1. Cross Platform</a></li>
<li><a class="reference internal" href="#java-platform">15.15.2. Java Platform</a></li>
<li><a class="reference internal" href="#windows-platform">15.15.3. Windows Platform</a><ul>
<li><a class="reference internal" href="#win95-98-specific">15.15.3.1. Win95/98 specific</a></li>
</ul>
</li>
<li><a class="reference internal" href="#mac-os-platform">15.15.4. Mac OS Platform</a></li>
<li><a class="reference internal" href="#unix-platforms">15.15.5. Unix Platforms</a></li>
</ul>
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