I have been trying to set up IDL-Python bridge in Linux environment. I have used the Python bridge on the Windows system. The bridge has been constructed successfully and I used it several times. Based on this experience, I tried to set up the Python bridge in Linux system(Ubuntu 14.04 LTS). After the constructing IDL-Python bridge, IDL can read the library of Python 2.7. When I tried to import 'scipy' of the Python using IDL, It shows that IDL> python.import(‘scipy’) IDL> It did not shows any problems. However, when I tried to read the function in IDL library in Python, I faced a error. >>> from idlpy import IDL Traceback (most recent call last): File “”, line 1, in File “/opt/IDL85/exelis/idl85/lib/bridges/idlpy.py”, line 19, in pyidl = __import__(idllibrary) ImportError: /opt/IDL85/exelis/idl85/bin/bin.linux.x86_64/pythonidl27.so: undefined symbol: PyUnicodeUCS4_AsUTF8String >>> I searched about the 'PyUnicodeUCS4_AsUTF8String' error and found that the Python 2.7 can read the UCS-2 or UCS-4. This error massage seems to be appeared when the Python try to read a code with wrong UCS-2/UCS-4. Unfortunately, I didn't know about UCS-2 and UCS-4, thus I couldn't find the solution. One weird thing that I found is that: I have used same Python 2.7 in Windows and Linux system. In Windows system, Python 2.7 is compiled with UCS-2 and I can use the Python bridge without any problems. Python 2.7 in Linux system is also compiled with UCS-2. After that I knew about it, I thought that the 'idlpy.py' code in Linux system is written in different UCS-2/UCS-4. However, there is no difference between 'idlpy.py' code in Linux system and Windows system. I think that the 'pythonidl27.so' is the problem in my system. Is there any way to use the IDL-Python bridge on Linux???