#8456: lazy import improvements
---------------------------+------------------------------------------------
   Reporter:  robertwb     |       Owner:  tbd       
       Type:  enhancement  |      Status:  needs_work
   Priority:  major        |   Milestone:  sage-4.3.4
  Component:  misc         |    Keywords:            
     Author:               |    Upstream:  N/A       
   Reviewer:               |      Merged:            
Work_issues:               |  
---------------------------+------------------------------------------------

Comment(by SimonKing):

 PS:

 When quitting sage after the unsuccessful start, I got

 {{{
 sage: quit
 ---------------------------------------------------------------------------
 TypeError                                 Traceback (most recent call
 last)

 /home/king/SAGE/sage-4.3.1/local/bin/<ipython console> in <module>()

 /home/king/SAGE/sage-4.3.1/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/king/SAGE/sage-4.3.1/local/lib/python2.6/site-
 packages/IPython/Magic.pyc in magic_quit(self, parameter_s)
    2478         """Exit IPython, confirming if configured to do so (like
 %exit)"""
    2479
 -> 2480         self.shell.exit()
    2481
    2482     def magic_Exit(self, parameter_s=''):

 /home/king/SAGE/sage-4.3.1/local/lib/python2.6/site-packages/sage/all.py
 in _quit_sage_(self)
     292         self.exit_now = True
     293     if self.exit_now:
 --> 294         quit_sage()
     295         self.exit_now = True
     296

 TypeError: 'NoneType' object is not callable
 }}}
 Even worse, hg_sage does not work. So, it is more difficult now to repair
 my sage installation...

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8456#comment:3>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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