nltk.data.load() error help

[Jarvin Li]

Dear All,

I'm trying to experiment with NLTK, and I am having trouble using the load() function. I need to try to load a file from my own machine. From what I understand on the internet, I tried this:

import nltk

trailfile = nltk.data.load('C:/quotefilePos.json', 'json', True, True, 'None', 'None', 'None')

After that I got some error messages that look like this:

C:\Python34\python.exe "C:/Users/JarvinLi/PycharmProjects/ThesisTrial1/Trial Loading.py"
<<Loading C://quotefilePos.json>>
Traceback (most recent call last):
  File "C:/Users/JarvinLi/PycharmProjects/ThesisTrial1/Trial Loading.py", line 3, in <module>
    trailfile = nltk.data.load(r'C:/quotefilePos.json', 'json', True, True, 'None', 'None', 'None')
  File "C:\Python34\lib\site-packages\nltk\data.py", line 801, in load
    opened_resource = _open(resource_url)
  File "C:\Python34\lib\site-packages\nltk\data.py", line 924, in _open
    return urlopen(resource_url)
  File "C:\Python34\lib\urllib\request.py", line 161, in urlopen
    return opener.open(url, data, timeout)
  File "C:\Python34\lib\urllib\request.py", line 464, in open
    response = self._open(req, data)
  File "C:\Python34\lib\urllib\request.py", line 487, in _open
    'unknown_open', req)
  File "C:\Python34\lib\urllib\request.py", line 442, in _call_chain
    result = func(*args)
  File "C:\Python34\lib\urllib\request.py", line 1253, in unknown_open
    raise URLError('unknown url type: %s' % type)
urllib.error.URLError: <urlopen error unknown url type: c>

Problem is, I don't understand that it. Any tips, help on how I can get this thing running?

Any reply will be welcomed. 

Thanks in advance.

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[George Orton]

Hi, The error message "urllib.error.URLError: <urlopen error unknown url type: c>” is indicating that "C:/quotefilePos.json” is an invalid URL. You will need to specify a valid URL for urllib to work correctly.

Sincerely, George

[Dimitriadis, A. (Alexis)]

trailfile = nltk.data.load('C:/quotefilePos.json', 'json', True, True, 'None', 'None', 'None')

...

urllib.error.URLError: <urlopen error unknown url type: c>

There was a bug, since fixed, in an older version of the NLTK that can give this error on Windows. Basically the C: at the front of your path is mistaken for a protocol, like "http:”. I couldn’t say if downloading the latest version will make your problem go away, but it’s worth a try. If the problem persists (or if you don’t feel like refreshing your nltk), explicitly add the “file:” protocol at the start of your path:

trailfile = nltk.data.load(r'file:C:\quotefilePos.json', 'json', True, True, 'None', 'None', 'None')

Alexis