hi,

i made the modifications.

__repr__, __str__ functions
examples indentation
import addition for __init.py__

tests and doctests passed and checked for white spaces,

thanks
kasun

On Mon, Apr 19, 2010 at 2:16 AM, David Joyner <wdjoy...@gmail.com> wrote:

> On Sun, Apr 18, 2010 at 7:14 PM, Aaron S. Meurer <asmeu...@gmail.com>
> wrote:
> > OK, It's mostly little things now.
> > - Reindent your __repr__ function.  I don't even know why that works.
> > - Maybe David or others will have an opinion on this.  Should it _repr_
> as
> > this?
>
>
> Yes, it doesn't appear that __repr__ conforms to Python standards
> http://docs.python.org/reference/datamodel.html
> __str__ is still missing.
>
>
> > In [15]: PrimeField(5)
> > Out[15]: [0, 1, 2, 3, 4]
> > It can become unwieldily for large primes.  Also, I would at least expect
> > {}, to denote that it is a set (and not make it look like a list).
> > - The first lines of your examples need to be reindented .
> > - It is no longer in the main __init__.py file.
> > - I would like to see __contains__, but it can be done later (it isn't
> > blocking it).
> > - You have trailing whitespace at the end of the file.
> > Aaron Meurer
> > On Apr 18, 2010, at 1:46 PM, Kasun Samarasinghe wrote:
> >
> > hi,
> > while I m working with github, can you check this patch. I addressed all
> the
> > comments.
> > thank you,
> > kasun
> >
> > On Sat, Apr 17, 2010 at 10:42 PM, Aaron S. Meurer <asmeu...@gmail.com>
> > wrote:
> >>
> >> This patch is not applying for me.  Can you squash all of your patches
> >> into one commit (use git rebase -i master)?  Also, things would be
> easier if
> >> you pushed up to a github repository.
> >> Now that it works, I can comment on the actual code.
> >> In [2]: a = PrimeField(5)
> >> In [4]: a.elements()
> >> Out[4]: [0, 1, 2, 3, 4]
> >> In [5]: a.multiplicative_inverse(4) # I think this should return 4, not
> >> -1.
> >> Out[5]: -1
> >> In [7]: 4 in a # This ought to work (__contains__)
> >>
> >>
> ---------------------------------------------------------------------------
> >> TypeError                                 Traceback (most recent call
> >> last)
> >> /Users/aaronmeurer/Documents/python/sympy/sympy/<ipython console> in
> >> <module>()
> >> TypeError: argument of type 'instance' is not iterable
> >> In [9]: a = PrimeField(4)
> >> ValueError: Invalid Argument
> >> Use more descriptive messages than "Invalid Argument" for your errors.
> >>  For example, for this one, you might use "Argument of PrimeField must
> be a
> >> prime number (received 4)", or something similar.
> >> In [22]: a
> >> Out[22]: <sympy.abstractalgebra.finitefield.PrimeField instance at
> >> 0x175ca08>
> >> Like David said, please include some kind of __str__ or __repr__ method
> so
> >> this prints nicer.
> >> In your doctests, and elsewhere, use one space around an =, such as "gf7
> =
> >> PrimeField(7)".
> >> I think this is almost ready.
> >> Aaron Meurer
> >> On Apr 16, 2010, at 4:29 PM, Kasun Samarasinghe wrote:
> >>
> >> hi aaron,
> >> i managed to fix the doctest problem, here is the patch for that part
> >> only.
> >> kasun
> >> On Sat, Apr 17, 2010 at 12:12 AM, Kasun Samarasinghe
> >> <kwsamarasin...@gmail.com> wrote:
> >>>
> >>> I have fixed the nested problem and white spaces problem. In my machine
> >>> it passes the tests.
> >>> here __init__.patch is the import statement in sympy/__init__.py
> >>> thank you,
> >>> kasun
> >>>
> >>> On Fri, Apr 16, 2010 at 11:27 PM, Kasun Samarasinghe
> >>> <kwsamarasin...@gmail.com> wrote:
> >>>>
> >>>> also can you please have a look at my doctests, since it fails.
> >>>> thanks
> >>>>
> >>>> On Fri, Apr 16, 2010 at 11:20 PM, Kasun Samarasinghe
> >>>> <kwsamarasin...@gmail.com> wrote:
> >>>>>
> >>>>> hi aaron
> >>>>> will it convert the tab into four spaces if I run the strip utility?
> >>>>> thanks
> >>>>> kasun
> >>>>>
> >>>>>
> >>>>>
> >>>>> On Fri, Apr 16, 2010 at 10:20 PM, Aaron S. Meurer <
> asmeu...@gmail.com>
> >>>>> wrote:
> >>>>>>
> >>>>>> Sorry, it still doesn't work for me.  The problem is that you have
> >>>>>> abstractalgebra nested twice.  Also, I think you might need to add
> something
> >>>>>> to the main sympy/__init__.py (assuming we want this imported with
> from
> >>>>>> sympy import *; do we?).
> >>>>>> The ./bin/strip_whitespace utility will help with the other failure.
> >>>>>>  Setup your text editor to use 4 spaces instead of tabs:
> >>>>>>
> >>>>>>
> ________________________________________________________________________________
> >>>>>>
> >>>>>>
>  
> /users/aaronmeurer/documents/python/sympy/sympy/sympy/abstractalgebra/abstractalgebra/test_primefield.py
> >>>>>>   File
> >>>>>>
> "/users/aaronmeurer/documents/python/sympy/sympy/sympy/abstractalgebra/abstractalgebra/test_primefield.py",
> >>>>>> line 1, in <module>
> >>>>>>     from sympy.abstractalgebra.finitefield import PrimeField
> >>>>>> ImportError: No module named abstractalgebra.finitefield
> >>>>>>
> >>>>>>
> ________________________________________________________________________________
> >>>>>> __
> >>>>>>
> sympy/utilities/tests/test_code_quality.py:test_whitespace_and_exceptions
> >>>>>> ___
> >>>>>>   File
> >>>>>>
> "/users/aaronmeurer/documents/python/sympy/sympy/sympy/utilities/tests/test_code_quality.py",
> >>>>>> line 97, in test_whitespace_and_exceptions
> >>>>>>     check_directory_tree(SYMPY_PATH, test, exclude)
> >>>>>>   File
> >>>>>>
> "/users/aaronmeurer/documents/python/sympy/sympy/sympy/utilities/tests/test_code_quality.py",
> >>>>>> line 58, in check_directory_tree
> >>>>>>     file_check(fname)
> >>>>>>   File
> >>>>>>
> "/users/aaronmeurer/documents/python/sympy/sympy/sympy/utilities/tests/test_code_quality.py",
> >>>>>> line 82, in test
> >>>>>>     assert False, message_tabs % (fname, idx+1)
> >>>>>> AssertionError: File contains tabs instead of spaces:
> >>>>>>
> /users/aaronmeurer/documents/python/sympy/sympy/sympy/abstractalgebra/abstractalgebra/finitefield.py,
> >>>>>> line 11.
> >>>>>> Aaron Meurer
> >>>>>> On Apr 15, 2010, at 5:49 PM, Kasun Samarasinghe wrote:
> >>>>>>
> >>>>>> hi aaron,
> >>>>>> I managed to make it passed test, please give me the comment.
> attached
> >>>>>> the patch with this
> >>>>>> thank you
> >>>>>> kasun
> >>>>>>
> >>>>>> On Fri, Apr 16, 2010 at 12:31 AM, Ronan Lamy <ronan.l...@gmail.com>
> >>>>>> wrote:
> >>>>>>>
> >>>>>>> Le jeudi 15 avril 2010 à 13:46 -0600, Aaron S. Meurer a écrit :
> >>>>>>> > - I think PrimeField should subclass from Expr or Basic (though I
> >>>>>>> > could be wrong on this one).
> >>>>>>> >
> >>>>>>> No, it should not. Instances of PrimeField are equivalent to
> classes
> >>>>>>> like Integer or Rational. I think sympy is not quite ready for this
> >>>>>>> yet.
> >>>>>>> In the current model, PrimeField "should" be a metaclass and can
> only
> >>>>>>> subclass BasicType (which is empty). It is its instances which
> >>>>>>> "should"
> >>>>>>> be subclasses of Basic. And yes, this would probably be very messy.
> >>>>>>>
> >>>>>>> So, it is reasonable to implement finite fields outside the main
> >>>>>>> hierarchy (note that polynomials are also outside the main
> hierarchy,
> >>>>>>> ultimately for the same reason). When sympy grows ways to
> manipulate
> >>>>>>> types, they can be brought back into the fold.
> >>>>>>>
> >>>>>>> > - How is this different from the GF
> >>>>>>> >  implementation in polys?  Should this rather just be providing a
> >>>>>>> > user
> >>>>>>> >  interface to that?
> >>>>>>>
> >>>>>>> I think it's the opposite: polys should interface with the generic
> >>>>>>> implementation. Ultimately, the implementations should be merged,
> but
> >>>>>>> the code should move out of polys and into the new module.
> >>>>>>>
> >>>>>>> Ronan
> >>>>>>>
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> >>>>
> >>>
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