#7514: rewrite load and attach
---------------------------+------------------------------------------------
Reporter: was | Owner: tbd
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-4.3.1
Component: misc | Keywords:
Work_issues: | Author:
Upstream: N/A | Reviewer:
Merged: |
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Comment(by mpatel):
I noticed
{{{
#!python
sage: f = 1
sage: save(f, 'f')
sage: attach('f.sobj')
Traceback (most recent call last)
...
ValueError: argument (='f.sobj') to load or attach must have extension py,
sage, or pyx
sage: attached_files()
['f.sobj']
}}}
Questions about loading/attaching Cython files:
* Can they only be loaded once, if they haven't changed? For example: If
`zzz.pyx` contains `print 'Zzz!'`, I see
{{{
#!python
sage: load('zzz.pyx')
Compiling zzz.pyx...
Zzz!
sage: load('zzz.pyx')
sage: load('zzz.pyx')
sage: # Now I edit zzz.pyx
sage: load('zzz.pyx')
Compiling zzz.pyx...
Awake!
}}}
* Can they access existing objects? For example: If I put
{{{
#!python
try:
b += 1
except:
b = 10
print b
}}}
in a .pyx file, loading the file always sets `b` to 10, even if it's
already defined.
Disclaimer: I'm still quite ignorant about Cython.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7514#comment:10>
Sage <http://www.sagemath.org>
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