octave - 符号包和 Octave 仅适用于超级简单的任务。我做错什么了吗？

Question

我已经安装（在 Windows 机器上（Win7 64 位））：

• python 3.5.0 和 sympy 0.7.6.1
• 八度音程 4.0.0.0 和符号 2.2.2

当我尝试使用多个操作员做任何事情时，这就是我得到的：

>> pkg load symbolic
>> syms x
OctSymPy v2.2.2: this is free software without warranty, see source.
Initializing communication with SymPy using a popen2() pipe.
Detected Windows: using "winwrapy.bat" to workaround Octave bug #43036
Some output from the Python subprocess (pid 28092) might appear next.

OctSymPy: Communication established.  SymPy v0.7.6.1.
Python 3.5.0 (v3.5.0:374f501f4567, Sep 13 2015, 02:16:59) [MSC v.1900 32 bit (Int
el)]
>> x^2
ans = (sym)

   2
  x
>> x^2 + 2*x + 1
PYTHON: Error in var export
Resetting the octsympy communication mechanism
Closing the Python pipe...
error: python_cmd: unexpected return
error: called from
    python_cmd at line 143 column 6
    mtimes at line 42 column 5
>>

怎么了？