我最近在我的Fedora 21机器上安装了Sage 6.3。我使用的版本6.3稍微过时了，因为它是yum存储库中最新的版本。我还在同一台计算机上安装了Mathematica，希望能够从Sage内部调用它。
math命令的Mathematica终端界面有效，根据this reference page应该是我需要的全部内容。但是，当我告诉Sage使用Sage命令行或笔记本中的mathematica时，Sage会挂起。这是我与终端交互的一个示例（回溯非常糟糕，Sage经常出现这种情况）：
sage: mathematica('hello world')
^CInterrupting Mathematica...
^C---------------------------------------------------------------------------
KeyboardInterrupt Traceback (most recent call last)
<ipython-input-1-9208bb19d841> in <module>()
----> 1 mathematica('hello world')
/usr/lib64/python2.7/site-packages/sage/interfaces/interface.pyc in __call__(self, x, name)
197
198 if isinstance(x, basestring):
--> 199 return cls(self, x, name=name)
200 try:
201 return self._coerce_from_special_method(x)
/usr/lib64/python2.7/site-packages/sage/interfaces/expect.pyc in __init__(self, parent, value, is_name, name)
1310 else:
1311 try:
-> 1312 self._name = parent._create(value, name=name)
1313 # Convert ValueError and RuntimeError to TypeError for
1314 # coercion to work properly.
/usr/lib64/python2.7/site-packages/sage/interfaces/interface.pyc in _create(self, value, name)
387 def _create(self, value, name=None):
388 name = self._next_var_name() if name is None else name
--> 389 self.set(name, value)
390 return name
391
/usr/lib64/python2.7/site-packages/sage/interfaces/mathematica.pyc in set(self, var, value)
508 cmd = '%s=%s;'%(var,value)
509 #out = self.eval(cmd)
--> 510 out = self._eval_line(cmd, allow_use_file=True)
511 if len(out) > 8:
512 raise TypeError("Error executing code in Mathematica\nCODE:\n\t%s\nMathematica ERROR:\n\t%s"%(cmd, out))
/usr/lib64/python2.7/site-packages/sage/interfaces/mathematica.pyc in _eval_line(self, line, allow_use_file, wait_for_prompt, restart_if_needed)
535 def _eval_line(self, line, allow_use_file=True, wait_for_prompt=True, restart_if_needed=False):
536 s = Expect._eval_line(self, line,
--> 537 allow_use_file=allow_use_file, wait_for_prompt=wait_for_prompt)
538 return str(s).strip('\n')
539
/usr/lib64/python2.7/site-packages/sage/interfaces/expect.pyc in _eval_line(self, line, allow_use_file, wait_for_prompt, restart_if_needed)
890 out = ''
891 except KeyboardInterrupt:
--> 892 self._keyboard_interrupt()
893 raise KeyboardInterrupt("Ctrl-c pressed while running %s"%self)
894 if self._terminal_echo:
/usr/lib64/python2.7/site-packages/sage/interfaces/mathematica.pyc in _keyboard_interrupt(self)
420 e = self._expect
421 e.sendline(chr(3)) # send ctrl-c
--> 422 e.expect('Interrupt> ')
423 e.sendline("a") # a -- abort
424 e.expect(self._prompt)
/usr/lib64/sagemath/site-packages/pexpect.pyc in expect(self, pattern, timeout, searchwindowsize)
914 """
915 compiled_pattern_list = self.compile_pattern_list(pattern)
--> 916 return self.expect_list(compiled_pattern_list, timeout, searchwindowsize)
917
918 def expect_list(self, pattern_list, timeout = -1, searchwindowsize = -1):
/usr/lib64/sagemath/site-packages/pexpect.pyc in expect_list(self, pattern_list, timeout, searchwindowsize)
965 raise TIMEOUT ('Timeout exceeded in expect_list().')
966 # Still have time left, so read more data
--> 967 c = self.read_nonblocking (self.maxread, timeout)
968 incoming = incoming + c
969 if timeout is not None:
/usr/lib64/sagemath/site-packages/pexpect.pyc in read_nonblocking(self, size, timeout)
546 raise EOF ('End Of File (EOF) in read_nonblocking(). Pokey platform.')
547
--> 548 r, w, e = select.select([self.child_fd], [], [], timeout)
549 if not r:
550 if not self.isalive():
/usr/lib64/python2.7/site-packages/sage/ext/c_lib.so in sage.ext.c_lib.sage_python_check_interrupt (build/cythonized/sage/ext/c_lib.c:1683)()
/usr/lib64/python2.7/site-packages/sage/ext/c_lib.so in sage.ext.c_lib.sig_raise_exception (build/cythonized/sage/ext/c_lib.c:769)()
KeyboardInterrupt:
sage:
Mathematica自己的界面中的等效工作正常：
Mathematica 10.1.0 for Linux x86 (64-bit)
Copyright 1988-2015 Wolfram Research, Inc.
In[1]:= hello world
Out[1]= hello world
In[2]:=
我做错了什么，或者这是Sage中的一个错误？下载和构建最新版本（6.7）会手动解决问题吗？
修改：
我正在使用Mathematica 10.1.0。可能是我的问题，即旧版本的Sage不知道如何处理更新版本的Mathematica？