#4637: bug/stupid design of padic_printing.sep print mode stuff
---------------------------+------------------------------------------------
Reporter: was | Owner: was
Type: defect | Status: new
Priority: major | Milestone: sage-3.2.1
Component: number theory | Keywords:
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Consider this session:
{{{
bsd:padics was$ sage
----------------------------------------------------------------------
| Sage Version 3.2.1.alpha2, Release Date: 2008-11-26 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: Qp(7, print_mode="digits")(1/3)
...44444444444444444445
sage: padic_printing.sep('][')
sage: Qp(7, print_mode="digits")(1/3)
...44444444444444444445
sage: Qp(11, print_mode="digits")(1/3)
...73737373737373737374
sage: Qp(17, print_mode="digits")(1/3)
...B5B5B5B5B5B5B5B5B5B6
sage: Qp(97, print_mode="digits")(1/3)
...64][64][64][64][64][64][64][64][64][64][64][64][64][64][64][64][64][64][64][65
sage: Qp(7, print_mode="digits")(1/3)
...44444444444444444445
sage: Qp(389, print_mode="digits")(1/3)
...259][129][259][129][259][129][259][129][259][129][259][129][259][129][259][129][259][129][259][130
sage: padic_printing.sep('|')
sage: Qp(389, print_mode="digits")(1/3)
...259][129][259][129][259][129][259][129][259][129][259][129][259][129][259][129][259][129][259][130
sage: Qp(997, print_mode="digits")(1/3)
...664|664|664|664|664|664|664|664|664|664|664|664|664|664|664|664|664|664|664|665
sage: Qp(7, print_mode="digits")(1/3)
...44444444444444444445
sage: Qp(3, print_mode="digits")(1/3)
....1
sage: Qp(5, print_mode="digits")(1/3)
...31313131313131313132
}}}
Basically the print separator for p-adic fields depends on what the global
padic_printing.sep(...) thing happens to have been set at when that field
was first created. There seems to be absolutely no way to change it
later. The dependence is also totally baffling? Why the hell does it
change for 97 but not 17, 11, 7? WTF!?!
Solution -- make the frickin' separator a property of the field that must
be passed in. Notice now that isn't even possible. totally get rid of
this stupid padic_printing object.
{{{
sage: Qp(5, print_mode="digits", sep='|')
TypeError: Qp() got an unexpected keyword argument 'sep'
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4637>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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