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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def set_locale(locale):
    '''
    Sets the current system locale

    CLI Example:

    .. code-block:: bash

        salt '*' locale.set_locale 'en_US.UTF-8'
    '''
    lc_ctl = salt.utils.systemd.booted(__context__)
    # localectl on SLE12 is installed but the integration is broken -- config is rewritten by YaST2
    if lc_ctl and not (__grains__['os_family'] in ['Suse'] and __grains__['osmajorrelease'] in [12]):
        return _localectl_set(locale)

    if 'Suse' in __grains__['os_family']:
        # this block applies to all SUSE systems - also with systemd
        if not __salt__['file.file_exists']('/etc/sysconfig/language'):
            __salt__['file.touch']('/etc/sysconfig/language')
        __salt__['file.replace'](
            '/etc/sysconfig/language',
            '^RC_LANG=.*',
            'RC_LANG="{0}"'.format(locale),
            append_if_not_found=True
        )
    elif 'RedHat' in __grains__['os_family']:
        if not __salt__['file.file_exists']('/etc/sysconfig/i18n'):
            __salt__['file.touch']('/etc/sysconfig/i18n')
        __salt__['file.replace'](
            '/etc/sysconfig/i18n',
            '^LANG=.*',
            'LANG="{0}"'.format(locale),
            append_if_not_found=True
        )
    elif 'Debian' in __grains__['os_family']:
        # this block only applies to Debian without systemd
        update_locale = salt.utils.path.which('update-locale')
        if update_locale is None:
            raise CommandExecutionError(
                'Cannot set locale: "update-locale" was not found.')
        __salt__['cmd.run'](update_locale)  # (re)generate /etc/default/locale
        __salt__['file.replace'](
            '/etc/default/locale',
            '^LANG=.*',
            'LANG="{0}"'.format(locale),
            append_if_not_found=True
        )
    elif 'Gentoo' in __grains__['os_family']:
        cmd = 'eselect --brief locale set {0}'.format(locale)
        return __salt__['cmd.retcode'](cmd, python_shell=False) == 0
    elif 'Solaris' in __grains__['os_family']:
        if locale not in __salt__['locale.list_avail']():
            return False
        __salt__['file.replace'](
            '/etc/default/init',
            '^LANG=.*',
            'LANG="{0}"'.format(locale),
            append_if_not_found=True
        )
    else:
        raise CommandExecutionError('Error: Unsupported platform!')

    return True