How big is python24.dll?

Fuzzyman michael at foord.net
Wed Jul 14 14:29:13 CEST 2004


Thomas Heller <theller at python.net> wrote in message news:<n0243qu6.fsf at python.net>...
> David Fraser <davidf at sjsoft.com> writes:
> 
> >>>>No, and no. python24.dll incorporates many extension modules which
> >>>>were separate .pyd files before. In particular, it contains all .pyd
> >>>>files which don't require additional libraries (DLLs or external
> >>>>libraries).  A number of new extension modules were added for 2.4
> >>>>also, which got incorporated into python24.dll.
>  
> >>>>If you want to know the precise numbers, create a list of DLLs for
> >>>>Python 2.3, and a similar list for Python 2.4, and see what files
> >>>>went away. Also, compare the list of builtin modules to find out what
> >>>>modules have been added since 2.3.
>  
> >>>>If this kind of combination has any effect on the size, it rather
> >>>>causes to safe space than to waste it: that way, Python ships with
> >>>>less DLLs, which means fewer files, and less overhead for DLL data
> >>>>structures.
> >>>>
> >>>
> >>>It may save space for the standard Python build. But it will make it
> >>>harder to save space on py2exe or frozen Python programs for example...
>  
> >> IIRC, Martin did this change because I requested it, with py2exe in
> >> mind.  If you really want the smallest file size in the py2exe
> >> builds, you may as well compile your own Python.dll, including only
> >> those modules as buildins which you really need.
> >
> > OK, that's fine. How does it help py2exe then? Does anyone have a list
> > of the modules added?
> 
> Well, you can print sys.builtin_module_names, which outputs this:
> 
> ('__builtin__', '__main__', '_bisect', '_codecs', '_codecs_big5',
> '_codecs_cp932', '_codecs_cp949', '_codecs_cp950',
> '_codecs_euc_jisx0213', '_codecs_euc_jp', '_codecs_euc_kr',
> '_codecs_gb18030', '_codecs_gb2312', '_codecs_gbk', '_codecs_hz ',
> '_codecs_iso2022_jp', '_codecs_iso2022_jp_1', '_codecs_iso2022_jp_2',
> '_codecs_iso2022_jp_3', '_codecs_iso2022_jp_ext ', '_codecs_iso2022_kr',
> '_codecs_johab', '_codecs_mapdata_ja_JP', '_codecs_mapdata_ko_KR',
> '_codecs_mapdata_zh_CN', '_codecs_mapdata_zh_TW', '_codecs_shift_jis',
> '_codecs_shift_jisx0213', '_csv', '_heapq', '_hotshot', '_locale',
> '_multibytecodec', '_random', '_sre', '_symtable', '_weakref',
> '_winreg', 'array', 'audioop', 'binascii', 'cPickle', 'cStringIO',
> 'cmath', 'collections', 'datetime', 'errno', 'exceptions', 'gc',
> 'imageop', 'imp', 'itertools', 'marshal', 'math', 'md5' , 'mmap',
> 'msvcrt', 'nt', 'operator', 'parser', 'regex', 'rgbimg', 'rotor', 'sha',
> 'signal', 'strop', 'struct', 'sys', ' thread', 'time', 'xreadlines',
> 'xxsubtype', 'zipimport')
> 
> Maybe more interesting is which modules remain non-builtin, here's the
> list from the Python 2.4 DLLs directory:
> 
> 12.07.2004  21:27            73.728 bz2.pyd
> 12.07.2004  21:25           135.168 pyexpat.pyd
> 12.07.2004  21:26             8.192 select.pyd
> 18.06.2004  16:53           566.272 tcl84.dll
> 18.06.2004  16:53             5.120 tclpip84.dll
> 18.06.2004  17:03         1.027.584 tk84.dll
> 12.07.2004  21:26           405.504 unicodedata.pyd
> 12.07.2004  21:23             6.656 winsound.pyd
> 12.07.2004  21:24            65.536 zlib.pyd
> 12.07.2004  21:29           692.224 _bsddb.pyd
> 12.07.2004  21:29            49.152 _socket.pyd
> 12.07.2004  21:29           479.232 _ssl.pyd
> 12.07.2004  21:28            12.800 _testcapi.pyd
> 12.07.2004  21:27            40.960 _tkinter.pyd
> 
> So, in *some* cases, py2exe only creates three files:
> python24.dll, library.zip, and yourapp.exe.
> 
> Maybe the CJK codecs should be moved into separate pyds again, although
> that may depend on the part of the world you (or the users of your
> program) live in.  Myself, I don't care too much about the python24.dll size.
> 
> Thomas


I sometimes write command line tools that I bundle with p2exe - in
which case having a smaller rather than more massive dll is preffered
- particularly when I offer them for download. For small tools - size
can matter. Oh well - I for one vote for keeping the codecs bundle
seperate.

As a side issue David Kastan has just compiled Python 2.3.4 for the
pocketPC. He's endeavoured to keep the dll down to a minimum and
everything else in a zip - making minimum size distributions possible.

More of an issue on a machine with 32mb ram (including storage).....

Regards,

Fuzzy

http://www.voidspace.org.uk/atlantibots/pythonutils.html



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