Resource u'tokenizers/punkt/english.pickle' not found
Solution 1:
To add to alvas' answer, you can download only the punkt
corpus:
nltk.download('punkt')
Downloading all
sounds like overkill to me. Unless that's what you want.
Solution 2:
If you're looking to only download the punkt
model:
import nltk
nltk.download('punkt')
If you're unsure which data/model you need, you can install the popular datasets, models and taggers from NLTK:
import nltk
nltk.download('popular')
With the above command, there is no need to use the GUI to download the datasets.