I upgraded NLTK to latest version and while import nltk, I get the following error

```
import nltk

```

File "C:\ProgramData\Anaconda2\lib\site-packages\nltk\tag\sequential.py", line 210
 print("[Trained Unigram tagger:", end=" ")
 ^
SyntaxError: invalid syntax

I commented this line but then another error. python version used is 2.7