How true is library VERSION.startswith(SONAME)

gistfile1.txt

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   "cells": [
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "from __future__ import print_function"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 1
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "from glob import glob\n",
      "import os"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 2
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "def find_libraries(root):\n",
      "    count = 0\n",
      "    mismatch = 0\n",
      "    for path, dirnames, filenames in os.walk(root):\n",
      "        for filename in filenames:\n",
      "            pathname = os.path.join(path, filename)\n",
      "            if '.so.' in filename:\n",
      "                count += 1\n",
      "                if os.path.islink(pathname):\n",
      "                    short_name, short_version = pathname.split('.so.')\n",
      "                    longname = os.readlink(pathname)\n",
      "                    if '.so.' in longname:\n",
      "                        long_name, long_version = longname.split('.so.')\n",
      "                        if not long_version.startswith(short_version):\n",
      "                            mismatch += 1\n",
      "                            print('{} {} != {}'.format(long_name, long_version, short_version))\n",
      "                    else:\n",
      "                        print('hard to match {} / {}'.format(filename, longname))\n",
      "    print('{} mismatch of {}'.format(mismatch, count))"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 30
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "find_libraries('/usr/lib')"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "libkpeoplewidgets 0.2.1 != 3\n",
        "libutempter 1.1.5 != 0\n",
        "liblancelot 1.9.0 != 2\n",
        "libowncloudsync 1.5.0 != 0\n",
        "libqinfinity 3.1.0 != 4\n",
        "libkasten2core 0.2.0 != 2\n",
        "libopen-pal 4.0.5 != 5\n",
        "libkwinglutils 1.0.0.abi2 != 1abi2\n",
        "libplasmaclock 4.11.5.abi4 != 4abi4\n",
        "libkephal 4.11.5.abi1 != 4abi1\n",
        "libkpeoplewidgets 0.1 != 1\n",
        "libktpmodelsprivate 0.8.0 != 7\n",
        "libmarblewidget 0.16.5 != 16\n",
        "libopen-pal 5 != 4\n",
        "libnepomukwidgets 4.11.5.abi1 != 4abi1\n",
        "libktpcommoninternalsprivate 0.8.0 != 7\n",
        "libktpwidgetsprivate 0.8.0 != 7\n",
        "libkpeople 0.2.1 != 3\n",
        "libkasten2controllers 0.2.0 != 2\n",
        "libkasten2okteta1controllers 0.2.1.abi1 != 1abi1\n",
        "libprocesscore 4.11.5.abi1 != 4abi1\n",
        "libkasten2okteta1gui 0.2.1 != 1\n",
        "libkonq 5.11.5.abi1 != 5abi1\n",
        "libokteta1gui 0.8.1 != 1\n",
        "libusbmuxd 1.0.8 != 2\n",
        "libkworkspace 4.11.5.abi2 != 4abi2\n",
        "libokteta1core 0.8.1 != 1\n",
        "libkasten2gui 0.2.0 != 2\n",
        "libktploggerprivate 0.8.0 != 7\n",
        "libkwineffects 1.0.0.abi5 != 1abi5\n",
        "libkpeople 0.1 != 1\n",
        "libtaskmanager 4.11.5.abi4 != 4abi4\n",
        "libkasten2okteta1core 0.2.1 != 1\n",
        "libkdecorations 4.11.5.abi2 != 4abi2\n",
        "libodbc 2 != 1"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n",
        "libodbccr 2 != 1\n",
        "hard to match libelf.so.1 / libelf-0.157.so\n",
        "libopenjpeg 1.5.2 != 5"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n",
        "libmlt 0.9.0 != 6\n",
        "libopenjpeg_JPWL 1.5.2 != 5\n",
        "libhwloc 5 != 1\n",
        "libclucene-shared 2.3.3.4 != 1\n",
        "libodbc 2 != 1\n",
        "hard to match libsmime3.so.1d / libsmime3.so\n",
        "libhwloc 5 != 3\n",
        "hard to match libtcl8.5.so.0 / libtcl8.5.so\n",
        "hard to match libtk8.6.so.0 / libtk8.6.so\n",
        "libhwloc 5 != 0\n",
        "hard to match libnspr4.so.0d / libnspr4.so\n",
        "hard to match libopenjpeg.so.2 / libopenjpeg-2.1.3.0.so\n",
        "libclucene-contribs-lib 2.3.3.4 != 1\n",
        "libmlt++ 0.9.0 != 3\n",
        "hard to match libplds4.so.0d / libplds4.so\n",
        "libhwloc 5 != 4\n",
        "hard to match libtcl8.6.so.0 / libtcl8.6.so\n",
        "hard to match libtk8.5.so.0 / libtk8.5.so\n",
        "libodbccr 2 != 1\n",
        "hard to match libnss3.so.1d / libnss3.so\n",
        "hard to match libplc4.so.0d / libplc4.so\n",
        "libhwloc 5 != 2\n",
        "libclucene-core 2.3.3.4 != 1\n",
        "libodbcinst 2 != 1\n",
        "hard to match libelf.so.1 / libelf-0.157.so\n",
        "libcurl 4 != 3\n",
        "libpcap 1.5.3 != 0.8\n",
        "hard to match libnssutil3.so.1d / libnssutil3.so\n",
        "hard to match libfdt.so.1 / libfdt-1.4.0.so\n",
        "libcurl-gnutls 4 != 3\n",
        "libgraphite2 3 != 2.0.0\n",
        "hard to match libssl3.so.1d / libssl3.so\n",
        "libkbibtexnetworking 0.4.91 != 1"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n",
        "libkbibtexproc 0.4.91 != 1\n",
        "libkbibtexio 0.4.91 != 1\n",
        "58 mismatch of 3882"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n"
       ]
      }
     ],
     "prompt_number": 31
    },
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     "cell_type": "code",
     "collapsed": false,
     "input": [],
     "language": "python",
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     "outputs": []
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