[web2py] Can't import module ?

[IVINH]

HI,

I install python-tesseract 
(http://code.google.com/p/python-tesseract/downloads/detail?name=python-tesseract-0.7.6.win32-py2.7.exe&can=2&q=),
 
it's work fine on Python interpreter (Win32). 
But, i can't import tesseract module on web2py source code version 2.0.9.
What did I do wrong?
Thanks.

Traceback (most recent call last):
  File "D:\web2py2.0\gluon\restricted.py", line 209, in restricted
    exec ccode in environment
  File "D:/web2py2.0/applications/app/controllers/plugin_qa.py" 
<http://127.0.0.1:8000/admin/default/edit/app/controllers/plugin_qa.py>, line 
101, in <module>
  File "D:\web2py2.0\gluon\globals.py", line 186, in <lambda>
    self._caller = lambda f: f()
  File "D:/web2py2.0/applications/app/controllers/plugin_qa.py" 
<http://127.0.0.1:8000/admin/default/edit/app/controllers/plugin_qa.py>, line 
81, in index
    import tesseract
  File "D:\web2py2.0\gluon\custom_import.py", line 298, in __call__
    raise e
ImportError: Cannot import module 'tesseract'


My controller:

def index():
    import tesseract
    api = tesseract.TessBaseAPI()
    api.Init(".","eng",tesseract.OEM_DEFAULT)
    api.SetVariable("tessedit_char_whitelist", 
"0123456789abcdefghijklmnopqrstuvwxyz")
    api.SetPageSegMode(tesseract.PSM_AUTO)

    mImgFile = "E:\test.png"
    mBuffer=open(mImgFile,"rb").read()
    result = tesseract.ProcessPagesBuffer(mBuffer,len(mBuffer),api)
    print "result(ProcessPagesBuffer)=",result
    response.view = 'plugin_app/content.%s'%request.extension    
    content = result
    return dict(content=content)

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