[Numpy-discussion] NumPy-Discussion Digest, Vol 85, Issue 19
Siegfried Gonzi
sgonzi at staffmail.ed.ac.uk
Mon Oct 7 16:40:08 EDT 2013
On 7 Oct 2013, at 21:16, numpy-discussion-request at scipy.org wrote:
>
>
> Message: 5
> Date: Mon, 7 Oct 2013 13:38:53 -0500
> From: Aronne Merrelli <aronne.merrelli at gmail.com>
> Subject: Re: [Numpy-discussion] Equivalent to IDL's help function
>
>
> There isn't anything quite the same. (I think what you are really asking
> for is a way to print the essential info about one variable name, at least
> that is how I would use the IDL "help" procedure). In IPython, I use the
> whos magic to do something similar, although it just prints this info for
> all variables or all variables of one class, rather than just one variable.
> I do not think there is a way to do it for just one variable.
>
> Here are some examples - you can see this works quite well but it will
> become unwieldy if your interactive namespace becomes large:
>
> In [1]: x = 1; y = 2; z = 3.3; d = {'one':1, 'two':2, 'three':3}
>
> In [2]: whos
> Variable Type Data/Info
> -----------------------------
> d dict n=3
> x int 1
> y int 2
> z float 3.3
>
> In [3]: whos dict
> Variable Type Data/Info
> ----------------------------
> d dict n=3
>
> In [4]: xa = np.arange(111); ya = np.ones((22,4))
>
> In [5]: whos ndarray
> Variable Type Data/Info
> -------------------------------
> xa ndarray 111: 111 elems, type `int64`, 888 bytes
> ya ndarray 22x4: 88 elems, type `float64`, 704 bytes
>
>
Hi
[I hope I am not screwing up the digest reply function here].
I am after a "whos" which would work in a script. It is not very often that I develop code at the command line.
I am definitely not one of the best programmers out there but I used "help" a lot in my IDL scripts and code. Our research group is migrating away from IDL towards Python.
I think Python's help is not the same than IDL's help. I know copying things from other languages is not always a good idea but one cannot argue that IDL's help comes in rather handy while developing and testing code.
>
>
> On Mon, Oct 7, 2013 at 12:15 PM, Siegfried Gonzi
> <sgonzi at staffmail.ed.ac.uk>wrote:
>
>> Hi all
>>
>> What is the equivalent to IDL its help function, e.g.
>>
>> ==
>> IDL> a = make_array(23,23,)
>>
>> IDL> help,a
>>
>> will result in:
>>
>> A FLOAT = Array[23, 23]
>>
>> or
>>
>> IDL> a = create_struct('idl',23)
>>
>> IDL> help,a
>>
>> gives:
>>
>> A STRUCT = -> <Anonymous> Array[1]
>>
>> ==
>>
>> I have been looking for it ever since using numpy. It would make my life
>> so much easier.
>>
>>
>> Thanks, Siegfried
>>
>>
>> --
>> The University of Edinburgh is a charitable body, registered in
>> Scotland, with registration number SC005336.
>>
>> _______________________________________________
>> NumPy-Discussion mailing list
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> ------------------------------
>
> Message: 6
> Date: Mon, 07 Oct 2013 23:22:17 +0300
> From: Dmitrey <tmp50 at ukr.net>
> Subject: Re: [Numpy-discussion] [ANN] MATLAB ODE solvers - now
> available in Python (Dmitrey)
> To: Discussion of Numerical Python <numpy-discussion at scipy.org>
> Cc: numpy-discussion at scipy.org
> Message-ID: <1381177204.440489225.k74gn9x8 at frv43.ukr.net>
> Content-Type: text/plain; charset="utf-8"
>
> FYI scipy ODE solvers vode, dopri5, dop853 also have been connected to OpenOpt, possibly with automatic differentiation by FuncDesigner? (dopri5 and dop853 don't use derivatives although).
>
> ----------------------
> Regards, D. http://openopt.org/Dmitrey
>
> --- ???????? ????????? ---
> ?? ????: "David Goldsmith" < d.l.goldsmith at gmail.com >
> ????: 7 ??????? 2013, 07:16:33
>
> On Sun, Oct 6, 2013 at 10:00 AM, < numpy-discussion-request at scipy.org > wrote:
> Message: 2
> Date: Sat, 05 Oct 2013 21:36:48 +0300
> From: Dmitrey < tmp50 at ukr.net >
> Subject: Re: [Numpy-discussion] [ANN] MATLAB ODE solvers - now
> ? ? ? ? available in ? ?Python
> To: Discussion of Numerical Python < numpy-discussion at scipy.org >
> Cc: numpy-discussion at scipy.org
> Message-ID: < 1380997576.559804301.aoynahlj at frv43.ukr.net >
> Content-Type: text/plain; charset="utf-8"
> ? Seems like using the MATLAB solvers with MCR requires my wrappers containing in several files to be compiled with MATLAB Compiler before. I have no license for MATLAB thus I may have problems if I'll make it done and will spread it with OpenOpt suite code, also, binary files are incompatible with BSD license.
>
> Darn, knew it was too good to be true. ? On the other hand, IIRC a little bit obsolete MATLAB versions (I don't think difference is essential) have more liberal licenses.
> As for MATLAB solvers examples, I have already mentioned them in the mail list, you could see them in http://openopt.org/ODE (just replace solver name from scipy_lsoda to ode23s or any other), http://openopt.org/NLP , http://openopt.org/SNLE
> Oooops, so sorry. :-o?
> DG?
> ----------------------
> Regards, D. http://openopt.org/Dmitrey
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> End of NumPy-Discussion Digest, Vol 85, Issue 17
> ************************************************
>
>
>
> --
>> From "A Letter From The Future" in "Peak Everything" by Richard Heinberg:
>
> "By the time I was an older teenager, a certain...attitude was developing among the young people...a feeling of utter contempt for anyone over a certain age--maybe 30 or 40.? The adults had consumed so many resources, and now there were none left for their own children...when those adults were younger, they [were] just doing what everybody else was doing...they figured it was normal to cut down ancient forests for...phone books, pump every last gallon of oil to power their SUV's...[but] for...my generation all that was just a dim memory...We [grew up] living in darkness, with shortages of food and water, with riots in the streets, with people begging on street corners...for us, the adults were the enemy."
>
> Want to really understand what's really going on?? Read "Peak Everything."
>
>
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