Opened 6 years ago
Closed 6 years ago
#10933 closed defect (fixed)
time of magma command fails inside function
Reported by: | mariah | Owned by: | was |
---|---|---|---|
Priority: | major | Milestone: | sage-4.7 |
Component: | interfaces | Keywords: | |
Cc: | Merged in: | sage-4.7.alpha5 | |
Authors: | Maarten Derickx | Reviewers: | Martin Raum |
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description
def foo(str): time magma(str) foo('1')
fails with
ERROR: An unexpected error occurred while tokenizing input The following traceback may be corrupted or invalid The error message is: ('EOF in multi-line statement', (18, 0)) --------------------------------------------------------------------------- TypeError Traceback (most recent call last) /home/mariah/sage/sage-4.6.2-x86_64-Linux-core2-fc/<ipython console> in <module>() /home/mariah/sage/sage-4.6.2-x86_64-Linux-core2-fc/<ipython console> in foo(str) /home/mariah/sage/sage-4.6.2-x86_64-Linux-core2-fc/local/lib/python2.6/site-packages/IPython/iplib.pyc in ipmagic(self, arg_s) 951 else: 952 magic_args = self.var_expand(magic_args,1) --> 953 return fn(magic_args) 954 955 def ipalias(self,arg_s): /home/mariah/sage/sage-4.6.2-x86_64-Linux-core2-fc/local/lib/python2.6/site-packages/IPython/Magic.pyc in magic_time(self, parameter_s) 1904 if mode=='eval': 1905 st = clk() -> 1906 out = eval(code,glob) 1907 end = clk() 1908 else: /home/mariah/sage/sage-4.6.2-x86_64-Linux-core2-fc/<timed eval> in <module>() /home/mariah/sage/sage-4.6.2-x86_64-Linux-core2-fc/local/lib/python2.6/site-packages/sage/interfaces/magma.pyc in __call__(self, x, gens) 735 pass 736 --> 737 A = Expect.__call__(self, x) 738 if has_cache: 739 x._magma_cache[self] = A /home/mariah/sage/sage-4.6.2-x86_64-Linux-core2-fc/local/lib/python2.6/site-packages/sage/interfaces/expect.pyc in __call__(self, x, name) 1110 return cls(self, str(x), name=name) 1111 except TypeError, msg2: -> 1112 raise TypeError, msg 1113 1114 def _coerce_from_special_method(self, x): TypeError: unable to coerce element into magma sage:
Attachments (1)
Change History (9)
comment:1 Changed 6 years ago by
comment:2 Changed 6 years ago by
sage: def foo(s): ....: time gp(s) ....: sage: foo('1') NameError: name 's' is not defined
This might also be relevant:
sage: print preparse("""def foo(str):\n time gp(str)\n\nprint gp('1')""", do_time=True) def foo(str): __time__=misc.cputime(); __wall__=misc.walltime(); gp(str); print "Time: CPU %.2f s, Wall: %.2f s"%(misc.cputime(__time__), misc.walltime(__wall__)) print gp('1') sage: def foo(str): ....: __time__=misc.cputime(); __wall__=misc.walltime(); gp(str); print "Time: CPU %.2f s, Wall: %.2f s"%(misc.cputime(__time__), misc.walltime(__wall__)) ....: sage: sage: foo('1') Time: CPU 0.00 s, Wall: 0.00 s
The next thing I might do is look into exactly what Python is executing... there is something funny going on with the preparser not preparsing the input as expected...
comment:3 Changed 6 years ago by
OK, investigated this for IPython. The issue is that it evaluates the expression gp(s) within the main user namespace, not within the function's internal namespace (where s lives). Off the top of my head, I can't think of a neat way for the time command to get the namespace from inside the function.
Changed 6 years ago by
comment:4 Changed 6 years ago by
- Status changed from new to needs_review
I fixed this by making the preparse_ipython preparse the time just as it already happens in the notebook.
comment:5 Changed 6 years ago by
- Reviewers set to Martin Raum
- Status changed from needs_review to positive_review
That's ok, but let us hope that is gets fixed in IPython soon.
comment:6 Changed 6 years ago by
We're looking at a way to make %time evaluate things in the correct scope, but in the current ipython trunk, auto-magics (like "time" without the %) are only used in single-line inputs. So you'd have to do:
def f(x): %time gp(x)
comment:7 Changed 6 years ago by
I've written some simple code to make this work in IPython, if you want to test my branch here: https://github.com/ipython/ipython/pull/295
comment:8 Changed 6 years ago by
- Merged in set to sage-4.7.alpha5
- Resolution set to fixed
- Status changed from positive_review to closed
This isn't a magma issue per se. I get a similar issue with gp: