Nonetype Error

[Maurice Waka]

Am calling functions from a list as follows:

''.join([x() for x in corpus])

A function could be like this:

def findWholeWord(w):
    return re.compile(r'\b({0})\b'.format(w), flags=re.IGNORECASE).search

item = ['ii']
fnval = ['i', 'we', 'cake', 'love', 'time', ]

fadmin = ['admin','give',]
G3 = [one(), two(), three()]
G4 = [four(), five()]
l = []
def testing():    
    while True:
        for c in fnval:            
            if findWholeWord(c)(item[0]):            
                print 'yes'
        for c in fadmin:
            if findWholeWord(c)(item[0]):
                print 'yes admin'
        break

Sometimes the functions return a None value.AM also concerned about the function not slowing down the app.

Regards

To avoid this  

<type 'exceptions.TypeError'> 'NoneType' object is not callable

 I want to reply to the user with a statement like  "I can't find an answer. Please refresh your question"

How can I do this

[Leonel Câmara]

Where and how is the list of functions to be called (corpus) defined? The mistake is obviously there as one of the values in corpus is not a function it's a None. 

 

Also if the functions sometimes return a None value (the error would be different but) you cannot join them like that since None is not a string so you need to filter out the Nones with something like

''.join(y for y in [x() for x in corpus] if y is not None)

[Maurice Waka]

Corpus is defined in the controller. 

On Thu, 28 Jun 2018, 20:55 Leonel Câmara <leonel...@gmail.com> wrote:

Where and how is the list of functions to be called (corpus) defined? The mistake is obviously there as one of the values in corpus is not a function it's a None. 

 

Also if the functions sometimes return a None value (the error would be different but) you cannot join them like that since None is not a string so you need to do filter out the Nones with something like

''.join(y for y in [x() for x in corpus] if y is not None)

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[Leonel Câmara]

Maurice telling me corpus is defined in the controller doesn't help me at all, I need to see how you are picking the functions you put there to see why one could be None. A possible reason is that you have a dictionary of keys with a function as the value of each key, you then do a get from that dictionary which will return a None if the function isn't there.

[Maurice Waka]

My apologies.I got carried away by an issue.

Cotroller code:

from applications.....service.main import get_word, get_name, get_index, testing

def views:

    corpus = [get_name, get_words, get_index, testing]##imported functions

    result = ''.join(y for y in [x() for x in corpus] if y is not None)

  return dict(form=form, result=result)

On Thu, Jun 28, 2018 at 9:29 PM Leonel Câmara <leonel...@gmail.com> wrote:

Maurice telling me corpus is defined in the controller doesn't help me at all, I need to see how you are picking the functions you put there to see why one could be None. A possible reason is that you have a dictionary of keys with a function as the value of each key, you then do a get from that dictionary which will return a None if the function isn't there.

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[Leonel Câmara]

Ok, the error is not there, the error is inside one of the corpus functions.

[Maurice Waka]

Thanks.

What I want is how to reply with a string like:, 'I can not find a reply, please try again'. Am expecting errors when for example some one types random figures or letters that the function cannot process. A function can processe a request such as 'what's your name', but not 'ejududuurjrrh bjuejhr 1234'

Regards 

On Fri, 29 Jun 2018, 13:58 Leonel Câmara <leonel...@gmail.com> wrote:

Ok, the error is not there, the error is inside one of the corpus functions.

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[Leonel Câmara]

If you want to do that right you need to do natural language processing e.g. using python nltk.

[Maurice Waka]

Am using nlp, regex. I just want to capture that error. 

On Fri, 29 Jun 2018, 15:41 Leonel Câmara <leonel...@gmail.com> wrote:

If you want to do that right you need to do natural language processing e.g. using python nltk.

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[Leonel Câmara]

Well if you just want to capture the error you simply need to put stuff inside a try/except.

try:

    # your stuff

except TypeError:

    # other stuff you do when the error happens

[Maurice Waka]

Thanks for the help.

Be blessed 

On Fri, 29 Jun 2018, 17:03 Leonel Câmara <leonel...@gmail.com> wrote:

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