Python package to find pre-defined keywords/tags in a file / url / string

Question

Are there any python packages that can take a list of keywords / tags and match them up to a given string / file / url ?

Specifically using stemming and/or some other synonym way of matching.

ie my pre saved keywords:

Ski, Bike, Climb

my text:

Skiing in the mountains is great

Should get tagged with Ski

Skiing and mountain biking is fun

Should get tagged with Ski And Bike

And if I've got a synonyms file somewhere mapping Bike to MTB

MTB is a great way to spend the day

Should get tagged Bike

Answer 1

See Thesaurus (you can also try different modules, such as synonym module ).

Also you can test sentences for containing specific strings using in :

>>> 'Ski' in 'Skiing in the mountains is great'
True
>>> 'Bike' in 'Skiing in the mountains is great'
False

Answer 2

I don't know any package to do that but actually this is very simple with plain python. using re (regex) standard package. something like

import re
key_words =['ski','bike','climb'] 
input = "Skiing and mountain biking is fun"

input_words = input.split()#split on space
[word.lower() for word in input_words]
input_tags =[]
for word in input_words:
   for key in key_words:
      if re.search(key,word):
         input_tags.append(key)