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======= 2007-6-28 9:10 09:10:56 Íõ˳Ïè ÄúÔÚÀ´ÐÅÖÐдµ½:Re: [python-chinese] Çóº¯ÊýµÄµ¼Êý ======= 

ºÇºÇ£¬ Èç¹ûÕâÊÇÊýѧÎÊÌ⣬ ÕâҲ̫¼òµ¥ÁË°É¡£ µ¼Êý£¬ ÏÖÔڵĸßÖÐÉúûһ¸ö²»»áËãµÄ°¡¡£¿ÉÊÇÔÚµçÄÔÖÐÈçºÎʵÏÖÄØ£¿ mathematicasÖпÉÒÔ¼ÆËãµ¼Êý£¬ÎÒÖ»ÊÇÏëŪÇå³þ£¬ ËûÃÇÊÇÔõôËãµÄ¡£ È»ºóÎÒ»¹ÏëÎÊ΢·Ö·½³ÌµÄÇó½â£¬×öͼ֮ÀàµÄÎÊÌâÄØ¡£ ÎÒÊÇѧÎïÀíµÄ£¬ ÓüÆËã»ú½øÐÐÊýÖµ±Æ½üºÜ·½±ã¡£µ±È»ÊÐÃæÉÏÓÐmatlab£¬mathematicasÖ®ÀàµÄÊýѧÈí¼þ¡£ µ«ÊÚÖ®ÒÔÓãºÍÊÚÖ®ÒÔÓæµÄÇø±ð£¬´ó¼Ò¶¼¶®°É£¿ ÎÒ²»ÊǼÆËã»ú¿Æ°à³öÉú£¬ Çë´ó¼Ò°ï°ïÎÒ°É¡£ÎÒ²»ÒªÑ§Ê²Ã´Êý¾Ý½á¹¹Ö®ÀàµÄ¶«Î÷¡£ÎÒÖ»ÊÇÏëÄÜÓüÆËã»úʵÏÖÈκÎ×Ô¼ºÏëҪʵÏÖµÄÊýѧÎïÀí¼ÆËã¶øÒÑ¡«¡« лл´ó¼ÒÁË¡£ 
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找现成的库比较适合你.

在07-6-28，limkatkat <limkatkat at gmail.com> 写道：
>
> 我不要第一层楼，我只想要第一层之上的第二层楼而已~~~~
> ======= 2007-6-28 9:10 09:10:56 王顺翔 您在来信中写到:Re: [python-chinese] 求函数的导数
> =======
>
> 呵呵， 如果这是数学问题， 这也太简单了吧。 导数， 现在的高中生没一个不会算的啊。可是在电脑中如何实现呢？ mathematicas中可以计算导数，我只是想弄清楚， 他们是怎么算的。 然后我还想问微分方程的求解，做图之类的问题呢。 我是学物理的， 用计算机进行数值逼近很方便。当然市面上有matlab，mathematicas之类的数学软件。 但授之以鱼和授之以渔的区别，大家都懂吧？ 我不是计算机科班出生， 请大家帮帮我吧。我不要学什么数据结构之类的东西。我只是想能用计算机实现任何自己想要实现的数学物理计算而已～～ 谢谢大家了。
>
>
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¡£¡£¡£ ÄѵÀÔÚÕâÀïÇó¼ÆË㺯ÊýµÄËã·¨µÄÎÊÌâ»áÒýÆð±ÉÊÓ£¿

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ºÃ°É¡« ÎÒ²»ÇóËã·¨ÁË¡£ ÓÐÈËÄܸø³ö´úÂëÂ𣿠¾Íµ±ÊÇÒ»µÀ±à³ÌÌâºÃÁË¡«¡«
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²»È»¿´¿´python math°üµÄ´úÂëÒ²ÐС£

On 6/28/07, Íõ˳Ïè <wsxpython在gmail.com> wrote:
>
> ºÃ°É¡« ÎÒ²»ÇóËã·¨ÁË¡£ ÓÐÈËÄܸø³ö´úÂëÂ𣿠¾Íµ±ÊÇÒ»µÀ±à³ÌÌâºÃÁË¡«¡«
>
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ÌâÄ¿Ïȼòµ¥Ò»Ð©ºÃÁË£¬ Çó (x+1)^5£¬ x=2ʱµÄµ¼Êý¡£
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On 6/28/07, 王顺翔 <wsxpython在gmail.com> wrote:
> 好吧～ 我不求算法了。 有人能给出代码吗？ 就当是一道编程题好了～～
>
这里搜索你想要的计算支持吧
http://numpy.scipy.org/numpydoc/numdoc.htm

高等数学俺早就还给老师了，
如果你会使用MLab 等等工具，应该可以在此快速找到对等工具的

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ÎÒÕÒ¹ýmathµÄ°ü°¡×òÌ죬ûÕÒµ½¡£ ÄúÄÜ°ïÎҲ鿴һÏÂô£¿
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数学不好，随便写写，精确度没什么保证。
符号求导估计只能求助matlab之类了

x, delta=2, 0.00001
derivative=((x+delta+1)**5-(x+1)**5)/delta        #=405.000037063



在07-6-28，王顺翔 <wsxpython at gmail.com> 写道：
>
> 我找过math的包啊昨天，没找到。 您能帮我查看一下么？
>
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ºÙºÙ£¬Ô­À´ÄÇô¼òµ¥°¡¡£ ¶®ÁË£¬ лл°¡¡£ Ç°ÃæÒ»Ö±ÔÚÏëÊýÖµ±Æ½üÄØ¡£  ÒªÌá¸ß¾«¶È£¬ Ö»ÒªdeltaȡСһЩ¾ÍºÃÁË¡£
¶ÔÁË£¬ ÔÙÎÊÒ»¸öÎÊÌ⣬ pythonĬÈϵÄÊÇСÊýµãºð9룬 Èç¹ûÏÓ¾«¶È²»¹»£¬ ÔõôÈÃËüÈ¡µÃ¶àһЩÄØ£¿ ±ÈÈçСÊýµãºó20λ£¿

ÔÚ07-6-28£¬limon lin <limon7在gmail.com> дµÀ£º
>
> Êýѧ²»ºÃ£¬Ëæ±ãдд£¬¾«È·¶Èûʲô±£Ö¤¡£
> ·ûºÅÇóµ¼¹À¼ÆÖ»ÄÜÇóÖúmatlabÖ®ÀàÁË
>
> x, delta=2, 0.00001
> derivative=((x+delta+1)**5-(x+1)**5)/delta        #=405.000037063
>
>
>
> ÔÚ07-6-28£¬Íõ˳Ïè <wsxpython在gmail.com> дµÀ£º
> >
> > ÎÒÕÒ¹ýmathµÄ°ü°¡×òÌ죬ûÕÒµ½¡£ ÄúÄÜ°ïÎҲ鿴һÏÂô£¿
> >
> > _______________________________________________
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Python-2.5.1\Modules\mathmodule.c
¿ÉÄÜҪϸösource°ü¡£


On 6/28/07, Íõ˳Ïè <wsxpython在gmail.com> wrote:
>
> ÎÒÕÒ¹ýmathµÄ°ü°¡×òÌ죬ûÕÒµ½¡£ ÄúÄÜ°ïÎҲ鿴һÏÂô£¿
>
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decimal°É

On 6/28/07, Íõ˳Ïè <wsxpython在gmail.com> wrote:
>
> ºÙºÙ£¬Ô­À´ÄÇô¼òµ¥°¡¡£ ¶®ÁË£¬ лл°¡¡£ Ç°ÃæÒ»Ö±ÔÚÏëÊýÖµ±Æ½üÄØ¡£  ÒªÌá¸ß¾«¶È£¬ Ö»ÒªdeltaȡСһЩ¾ÍºÃÁË¡£
> ¶ÔÁË£¬ ÔÙÎÊÒ»¸öÎÊÌ⣬ pythonĬÈϵÄÊÇСÊýµãºð9룬 Èç¹ûÏÓ¾«¶È²»¹»£¬ ÔõôÈÃËüÈ¡µÃ¶àһЩÄØ£¿ ±ÈÈçСÊýµãºó20λ£¿
>
> ÔÚ07-6-28£¬limon lin < limon7在gmail.com> дµÀ£º
> >
> > Êýѧ²»ºÃ£¬Ëæ±ãдд£¬¾«È·¶Èûʲô±£Ö¤¡£
> > ·ûºÅÇóµ¼¹À¼ÆÖ»ÄÜÇóÖúmatlabÖ®ÀàÁË
> >
> > x, delta=2, 0.00001
> > derivative=((x+delta+1)**5-(x+1)**5)/delta        #=405.000037063
> >
> >
> >
> > ÔÚ07-6-28£¬Íõ˳Ïè <wsxpython在gmail.com > дµÀ£º
> > >
> > > ÎÒÕÒ¹ýmathµÄ°ü°¡×òÌ죬ûÕÒµ½¡£ ÄúÄÜ°ïÎҲ鿴һÏÂô£¿
> > >
> > > _______________________________________________
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> >
> >
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лл¡«¡« È¥¿´¿´

ÔÚ07-6-28£¬Tian <askfor在gmail.com> дµÀ£º
>
> decimal°É
>
> On 6/28/07, Íõ˳Ïè <wsxpython在gmail.com> wrote:
> >
> > ºÙºÙ£¬Ô­À´ÄÇô¼òµ¥°¡¡£ ¶®ÁË£¬ лл°¡¡£ Ç°ÃæÒ»Ö±ÔÚÏëÊýÖµ±Æ½üÄØ¡£  ÒªÌá¸ß¾«¶È£¬ Ö»ÒªdeltaȡСһЩ¾ÍºÃÁË¡£
> > ¶ÔÁË£¬ ÔÙÎÊÒ»¸öÎÊÌ⣬ pythonĬÈϵÄÊÇСÊýµãºð9룬 Èç¹ûÏÓ¾«¶È²»¹»£¬ ÔõôÈÃËüÈ¡µÃ¶àһЩÄØ£¿ ±ÈÈçСÊýµãºó20λ£¿
> >
> > ÔÚ07-6-28£¬limon lin < limon7在gmail.com> дµÀ£º
> > >
> > > Êýѧ²»ºÃ£¬Ëæ±ãдд£¬¾«È·¶Èûʲô±£Ö¤¡£
> > > ·ûºÅÇóµ¼¹À¼ÆÖ»ÄÜÇóÖúmatlabÖ®ÀàÁË
> > >
> > > x, delta=2, 0.00001
> > > derivative=((x+delta+1)**5-(x+1)**5)/delta        #= 405.000037063
> > >
> > >
> > >
> > > ÔÚ07-6-28£¬Íõ˳Ïè <wsxpython在gmail.com > дµÀ£º
> > > >
> > > > ÎÒÕÒ¹ýmathµÄ°ü°¡×òÌ죬ûÕÒµ½¡£ ÄúÄÜ°ïÎҲ鿴һÏÂô£¿
> > > >
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ÔΣ¬»¹ÒÔΪÄãÒªÕÒ·ûºÅÔËËãµÄ°ü¡£

ÔÚ07-6-28£¬Íõ˳Ïè <wsxpython在gmail.com> дµÀ£º
>
> лл¡«¡« È¥¿´¿´
>
> ÔÚ07-6-28£¬Tian <askfor在gmail.com> дµÀ£º
> >
> > decimal°É
> >
> > On 6/28/07, Íõ˳Ïè <wsxpython在gmail.com > wrote:
> > >
> > > ºÙºÙ£¬Ô­À´ÄÇô¼òµ¥°¡¡£ ¶®ÁË£¬ лл°¡¡£ Ç°ÃæÒ»Ö±ÔÚÏëÊýÖµ±Æ½üÄØ¡£  ÒªÌá¸ß¾«¶È£¬ Ö»ÒªdeltaȡСһЩ¾ÍºÃÁË¡£
> > > ¶ÔÁË£¬ ÔÙÎÊÒ»¸öÎÊÌ⣬ pythonĬÈϵÄÊÇСÊýµãºð9룬 Èç¹ûÏÓ¾«¶È²»¹»£¬ ÔõôÈÃËüÈ¡µÃ¶àһЩÄØ£¿ ±ÈÈçСÊýµãºó20λ£¿
> > >
> > > ÔÚ07-6-28£¬limon lin < limon7在gmail.com> дµÀ£º
> > > >
> > > > Êýѧ²»ºÃ£¬Ëæ±ãдд£¬¾«È·¶Èûʲô±£Ö¤¡£
> > > > ·ûºÅÇóµ¼¹À¼ÆÖ»ÄÜÇóÖúmatlabÖ®ÀàÁË
> > > >
> > > > x, delta=2, 0.00001
> > > > derivative=((x+delta+1)**5-(x+1)**5)/delta        #= 405.000037063
> > > >
> > > >
> > > >
> > > > ÔÚ07-6-28£¬Íõ˳Ïè <wsxpython在gmail.com > дµÀ£º
> > > > >
> > > > > ÎÒÕÒ¹ýmathµÄ°ü°¡×òÌ죬ûÕÒµ½¡£ ÄúÄÜ°ïÎҲ鿴һÏÂô£¿
> > > > >
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可能我前面的回复让你不爽了，对不起。
我只是觉得纯算法的话，和 Python 关系不大。
加上自己大学时数学分析 NG 三次，留下阴影了 :-D
但是如果是一些数模的算法，应该会比较受程序员欢迎吧。
似乎在应用中研究一些应用模型比纯粹的数值求解来得常见。


在 07-6-28，王顺翔<wsxpython在gmail.com> 写道：
> 。。。 难道在这里求计算函数的算法的问题会引起鄙视？
>
> 我承认我的目标很浅薄， 不为设计游戏， 不为做架构服务器。
>
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我的python是2.5 直接网卡安装 不成功   还需要什么条件么? 
rainytooo在rainytooo-ud:~/dev/dev_temp$ sudo python tgsetup.py
TurboGears Installer

The recommended Python for TurboGears is Python 2.4.4. This version of
Python is often available in your operating system's native package
format (via apt-get or yum, for instance). You can also easily build
Python from source on Unix-like systems. Here is the source download
link for Python:

http://www.python.org/ftp/python/2.4.4/Python-2.4.4.tgz

Would you like to continue with a Python 2.5 install?yes/no[y]
(y|n, default y)y
Beginning setuptools/EasyInstall installation and TurboGears download

Searching for TurboGears[standard]>=1.0.2.2
Reading http://www.turbogears.org/download/
Reading http://cheeseshop.python.org/pypi/TurboGears/
Reading http://www.turbogears.org
Reading http://www.turbogears.org/download/filelist.html
Reading http://cheeseshop.python.org/pypi/TurboGears/1.0.2.2
Reading http://cheeseshop.python.org/pypi/TurboGears/"
Best match: TurboGears 1.0.2.2
Downloading
http://files.turbogears.org/eggs/TurboGears-1.0.2.2-py2.5.egg
Processing TurboGears-1.0.2.2-py2.5.egg
removing
'/usr/lib/python2.5/site-packages/TurboGears-1.0.2.2-py2.5.egg' (and
everything under it)
creating /usr/lib/python2.5/site-packages/TurboGears-1.0.2.2-py2.5.egg
Extracting TurboGears-1.0.2.2-py2.5.egg
to /usr/lib/python2.5/site-packages
TurboGears 1.0.2.2 is already the active version in easy-install.pth
Installing tg-admin script to /usr/local/bin

Installed /usr/lib/python2.5/site-packages/TurboGears-1.0.2.2-py2.5.egg
Reading http://files.turbogears.org/eggs/
Processing dependencies for TurboGears[standard]>=1.0.2.2
Searching for Cheetah>=2.0rc7
Reading http://cheeseshop.python.org/pypi/Cheetah/
Reading http://cheeseshop.python.org/pypi/Cheetah/2.0rc8
Reading http://www.CheetahTemplate.org/
Reading http://cheeseshop.python.org/pypi/Cheetah/1.0
Best match: Cheetah 2.0rc8
Downloading http://files.turbogears.org/eggs/Cheetah-2.0rc8.tar.gz
Processing Cheetah-2.0rc8.tar.gz
Running Cheetah-2.0rc8/setup.py -q bdist_egg
--dist-dir /tmp/easy_install-LZRU7x/Cheetah-2.0rc8/egg-dist-tmp-jkDf4Z
warning: no files found matching '*.cfg'
warning: no files found matching 'examples'
warning: no files found matching 'docs'
warning: no files found matching 'bin'
warning: no files found matching '*' under directory 'docs'
warning: no files found matching '*' under directory 'examples'
warning: no previously-included files matching '*.pyc' found under
directory 'src'
warning: no previously-included files matching '*~' found under
directory 'src'
warning: no previously-included files matching '*.aux' found under
directory 'src'
warning: no previously-included files matching '*~' found under
directory 'docs'
warning: no previously-included files matching '*.aux' found under
directory 'docs'
src/_namemapper.c:15:58: 错误： Python.h：No such file or directory
src/_namemapper.c:24: 错误： expected ‘=’, ‘,’, ‘;’, ‘asm’ or
‘__attribute__’ before ‘*’ token
src/_namemapper.c:25: 错误： expected ‘=’, ‘,’, ‘;’, ‘asm’ or
‘__attribute__’ before ‘*’ token
src/_namemapper.c:26: 错误： expected ‘=’, ‘,’, ‘;’, ‘asm’ or
‘__attribute__’ before ‘*’ token
还有一些错误我省掉了

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ÔÚ07-6-28£¬Can Xue <xuecan在gmail.com> дµÀ£º
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ÔÚ07-6-28£¬katkat lim <limkatkat在gmail.com> дµÀ£º
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在 07-6-28，limon lin<limon7在gmail.com> 写道：
> 数学不好，随便写写，精确度没什么保证。
> 符号求导估计只能求助matlab之类了
>
> x, delta=2, 0.00001
> derivative=((x+delta+1)**5-(x+1)**5)/delta
> #=405.000037063
>
>

呵呵，标准的极限求导。

On 6/28/07, Íõ˳Ïè <wsxpython在gmail.com> wrote:
>
> ºÙºÙ¡«¡« ÓаüÒ²²»´í¡£ ¿´¿´ÄÚ²¿ÔõôʵÏ־ͺᣠ²»¹ý×Ô¼ºÏë³öÀ´£¬ Ó¡Ïó¸ü¼ÓÉî¿Ìѽ


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ÊÔ¹ýPython 2.4Âð£¿
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