Problem running Sage 5.0 on fedora 16

edit

Hello everybody,

(Sorry for the long code quoting.)

I'm trying to run Sage 5.0 (the binary version) on fedora 16. After launching Sage from terminal I get the following message:

==================================================================
----------------------------------------------------------------------
Sage Version 5.0, Release Date: 2012-05-14                         
Type notebook() for the GUI, and license() for information.        

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)

/home/Downloads/sage-5.0-linux-64bit-fedora_release_16_verne_-x86_64-Linux/local/lib/python2.7/site-packages/IPython/ipmaker.pyc in force_import(modname, force_reload)
     61         reload(sys.modules[modname])
     62     else:
---> 63         __import__(modname)
     64         
     65 

/home/Downloads/sage-5.0-linux-64bit-fedora_release_16_verne_-x86_64-Linux/local/bin/ipy_profile_sage.py in <module>()
      5     preparser(True)
      6     
----> 7     import sage.all_cmdline
      8     sage.all_cmdline._init_cmdline(globals())
      9     

/home/Downloads/sage-5.0-linux-64bit-fedora_release_16_verne_-x86_64-Linux/local/lib/python2.7/site-packages/sage/all_cmdline.py in <module>()
     12 try:
     13 
---> 14     from sage.all import *
     15     from sage.calculus.predefined import x
     16     preparser(on=True)

/home/Downloads/sage-5.0-linux-64bit-fedora_release_16_verne_-x86_64-Linux/local/lib/python2.7/site-packages/sage/all.py in <module>()
     76 
     77 # This must come before Calculus -- it initializes the Pynac library.
---> 78 import sage.symbolic.pynac
     79 
     80 from sage.modules.all    import *

/home/Downloads/sage-5.0-linux-64bit-fedora_release_16_verne_-x86_64-Linux/local/bin/pynac.pyx in init sage.symbolic.pynac (sage/symbolic/pynac.cpp:20046)()
   2108 
   2109 
-> 2110 
   2111 
   2112 

/home/Downloads/sage-5.0-linux-64bit-fedora_release_16_verne_-x86_64-Linux/local/bin/pynac.pyx in sage.symbolic.pynac.init_pynac_I (sage/symbolic/pynac.cpp:18021)()
   2004 
   2005 
-> 2006 
   2007 
   2008 

/home/Downloads/sage-5.0-linux-64bit-fedora_release_16_verne_-x86_64-Linux/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.pyc in QuadraticField(D, name, check, embedding, latex_name, **args)
    729     if latex_name == 'sqrt':
    730         latex_name = r'\sqrt{%s}' % D
--> 731     return NumberField(f, name, check=False, embedding=embedding, latex_name=latex_name, **args)
    732 
    733 def is_AbsoluteNumberField(x):

/home/Downloads/sage-5.0-linux-64bit-fedora_release_16_verne_-x86_64-Linux/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.pyc in NumberField(polynomial, name, check, names, cache, embedding, latex_name, assume_disc_small, maximize_at_primes)
    451     if polynomial.degree() == 2:
    452         K = NumberField_quadratic(polynomial, name, latex_name, check, embedding,
--> 453              assume_disc_small=assume_disc_small, maximize_at_primes=maximize_at_primes)
    454     else:
    455         K = NumberField_absolute(polynomial, name, latex_name, check, embedding,

/home/Downloads/sage-5.0-linux-64bit-fedora_release_16_verne_-x86_64-Linux/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.pyc in __init__(self, polynomial, name, latex_name, check, embedding, assume_disc_small, maximize_at_primes)
   8302             else:
   8303                 from sage.rings.complex_double import CDF
-> 8304                 self._standard_embedding = CDF.has_coerce_map_from(self) and CDF(rootD).imag() > 0
   8305 
   8306     def _coerce_map_from_(self, K):

/home/Downloads/sage-5.0-linux-64bit-fedora_release_16_verne_-x86_64-Linux/local/lib/python2.7/site-packages/sage/rings/complex_double.so in sage.rings.complex_double.ComplexDoubleField_class.__call__ (sage/rings/complex_double.c:3854)()
    320 
    321 
--> 322 
    323 
    324 

/home/Downloads/sage-5.0-linux-64bit-fedora_release_16_verne_-x86_64-Linux/local/lib/python2.7/site-packages/sage/structure/parent.so in sage.structure.parent.Parent.__call__ (sage/structure/parent.c:7941)()
   1056 
   1057 
-> 1058 
   1059 
   1060 

/home/Downloads/sage-5.0-linux-64bit-fedora_release_16_verne_-x86_64-Linux/local/lib/python2.7/site-packages/sage/categories/map.so in sage.categories.map.FormalCompositeMap._call_ (sage/categories/map.c:6087)()
   1268 
   1269 
-> 1270 
   1271 
   1272 

/home/Downloads/sage-5.0-linux-64bit-fedora_release_16_verne_-x86_64-Linux/local/lib/python2.7/site-packages/sage/rings/number_field/number_field_morphisms.so in sage.rings.number_field.number_field_morphisms.NumberFieldEmbedding._call_ (sage/rings/number_field/number_field_morphisms.c:2244)()
     75 
     76 
---> 77 
     78 
     79 

/home/Downloads/sage-5.0-linux-64bit-fedora_release_16_verne_-x86_64-Linux/local/lib ...