ImportError: No module named site

[chenchao at inhand.com.cn]

hi:
I'm Needing to get python 2.7.10 to cross compile correctly for an ARM 
embedded device. When I execute python using shell, it comes out this 
error:ImportError: No module named site.I have setted environment 
varible:PYTHONHOME and PYTHONPATH. Is there some good idea to sovle this 
issue?
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