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I am new to python and working on a map reduce problem with mincemeat. I am getting the following error while running the mincemeat script. $python mincemeat.py -p changeme localhost error: uncaptured python exception, closing channel <__main__.Client connected at 0x923fdcc> (<type 'exceptions.NameError'>:global name 're' is not defined [/usr/lib/python2.7/asyncore.py|read|79] [/usr/lib/python2.7/asyncore.py|handle_read_event|438] [/usr/lib/python2.7/asynchat.py|handle_read|140] [mincemeat.py|found_terminator|96] [mincemeat.py|process_command|194] [mincemeat.py|call_mapfn|170] [raw1.py|mapfn|43]) My code rests in raw1.py script which is given in the above stacktrace as [raw1.py|mapfn|43] . import re import mincemeat # ... allStopWords = {'about':1, 'above':1, 'after':1, 'again':1} def mapfn(fname, fcont): # ... for item in tList[1].split(): word = re.sub(r'[^\w]', ' ', item).lower().strip() # ERROR if (word not in allStopWords) and (len(word) > 1): # .... I have already imported re in raw1.py. The error doesn't appear if I import re in mincemeat.py.

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