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functionality. An alternative implementation became necessary because Python
3.5 deprecated this function, and Python 3.8 removed it altogether. Its
predecessor function :py:func:`platform.dist` was already deprecated since
Python 2.6 and removed in Python 3.8. Still, there are many cases in which
access to OS distribution information is needed. See `Python issue 1322
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    Return information about the current OS distribution as a tuple
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    * ``version``:  The result of :func:`distro.version`.

    * ``codename``:  The extra item (usually in parentheses) after the
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    This package maintains the following reliable distro ID values:

    ==============  =========================================
    Distro ID       Distribution
    ==============  =========================================
    "ubuntu"        Ubuntu
    "debian"        Debian
    "rhel"          RedHat Enterprise Linux
    "centos"        CentOS
    "fedora"        Fedora
    "sles"          SUSE Linux Enterprise Server
    "opensuse"      openSUSE
    "amzn"          Amazon Linux
    "arch"          Arch Linux
    "buildroot"     Buildroot
    "cloudlinux"    CloudLinux OS
    "exherbo"       Exherbo Linux
    "gentoo"        GenToo Linux
    "ibm_powerkvm"  IBM PowerKVM
    "kvmibm"        KVM for IBM z Systems
    "linuxmint"     Linux Mint
    "mageia"        Mageia
    "mandriva"      Mandriva Linux
    "parallels"     Parallels
    "pidora"        Pidora
    "raspbian"      Raspbian
    "oracle"        Oracle Linux (and Oracle Enterprise Linux)
    "scientific"    Scientific Linux
    "slackware"     Slackware
    "xenserver"     XenServer
    "openbsd"       OpenBSD
    "netbsd"        NetBSD
    "freebsd"       FreeBSD
    "midnightbsd"   MidnightBSD
    "rocky"         Rocky Linux
    "aix"           AIX
    "guix"          Guix System
    "altlinux"      ALT Linux
    ==============  =========================================

    If you have a need to get distros for reliable IDs added into this set,
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    **Lookup hierarchy and transformations:**

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    * the first part of the file name of the distro release file,

    The so determined ID value then passes the following transformations,
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    * blanks (which should not be there anyway) are translated to underscores,

    * a normalization of the ID is performed, based upon
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      in the OS distributions. A common reason for an incompatible change is
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    * If *pretty* is true:

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    codename is non-empty (e.g. "7.0 (Maipo)").

    Some distributions provide version numbers with different precisions in
    the different sources of distribution information. Examining the different
    sources in a fixed priority order does not always yield the most precise
    version (e.g. for Debian 8.2, or CentOS 7.1).

    Some other distributions may not provide this kind of information. In these
    cases, an empty string would be returned. This behavior can be observed
    with rolling releases distributions (e.g. Arch Linux).

    The *best* parameter can be used to control the approach for the returned
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    If *best* is false, the first non-empty version number in priority order of
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    If *best* is true, the most precise version number out of all examined
    sources is returned.

    **Lookup hierarchy:**

    In all cases, the version number is obtained from the following sources.
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    * the value of the "VERSION_ID" attribute of the os-release file,
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    * the version number parsed from the "<version_id>" field of the first line
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    * the version number parsed from the "PRETTY_NAME" attribute of the
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            'version_parts': {
                'major': '7',
                'minor': '0',
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    The dictionary structure and keys are always the same, regardless of which
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    * ``version_parts -> minor``:  The result of :func:`distro.minor_version`.

    * ``version_parts -> build_number``:  The result of
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    * ``like``:  The result of :func:`distro.like`.

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