传入无效位置，必须给出绝对路径？

我正在尝试为Redhawk运行python沙箱示例（https://redhawksdr.github.io/Documentation/mainch3.html#x5-270003.3）。我可以从/usr/local/redhawk/ide/2.1.2文件夹（./eclipse）启动REDHAWK IDE。但是，当我运行以下命令时，我收到一个错误：

>>> sb.IDELocation("/usr/local/redhawk/ide/2.1.2/eclipse")
IDELocation(): ERROR - invalid location passed in, must give absolute path 
/usr/local/redhawk/ide/2.1.2/eclipse

如果我忽略这个“IDELocation（）：ERROR”，我通过执行Plot（）命令有以下问题：

>>> sb.IDELocation("/usr/local/redhawk/ide/2.1.2/eclipse")
IDELocation(): ERROR - invalid location passed in, must give absolute path 
/usr/local/redhawk/ide/2.1.2/eclipse
>>> plot = sb.Plot()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/redhawk/core/lib/python/ossie/utils/sb/io_helpers.py", 
    line 1985, in __init__
    raise AssertionError, "Plot():__init__() ERROR - must set environment 
    variable RH_IDE or call IDELocation()"
AssertionError: Plot():__init__() ERROR - must set environment variable 
   RH_IDE or call IDELocation()

有人知道如何解决这个问题吗？提前致谢！