python -m textblob.download_corpora is giving error on Python 2

[pratyushmittal]

It seems nltk library released version 3.5 today. It is Python 3 only. This breaks textblob on Python 2.

I was able to fix the errors by adding the static nltk==3.4.5 in requirements.

[malakhovks]

Yep, same error on Python 2.7.17, when trying to install corpora

python -m textblob.download_corpora

Error:

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/runpy.py", line 163, in _run_module_as_main
    mod_name, _Error)
  File "/usr/local/lib/python2.7/runpy.py", line 102, in _get_module_details
    loader = get_loader(mod_name)
  File "/usr/local/lib/python2.7/pkgutil.py", line 462, in get_loader
    return find_loader(fullname)
  File "/usr/local/lib/python2.7/pkgutil.py", line 472, in find_loader
    for importer in iter_importers(fullname):
  File "/usr/local/lib/python2.7/pkgutil.py", line 428, in iter_importers
    __import__(pkg)
  File "/usr/local/lib/python2.7/site-packages/textblob/__init__.py", line 2, in <module>
    from .blob import TextBlob, Word, Sentence, Blobber, WordList
  File "/usr/local/lib/python2.7/site-packages/textblob/blob.py", line 28, in <module>
    import nltk
  File "/usr/local/lib/python2.7/site-packages/nltk/__init__.py", line 128, in <module>
    from nltk.collocations import *
  File "/usr/local/lib/python2.7/site-packages/nltk/collocations.py", line 35, in <module>
    from nltk.probability import FreqDist
  File "/usr/local/lib/python2.7/site-packages/nltk/probability.py", line 333
    print("%*s" % (width, samples[i]), end=" ")
                                          ^
SyntaxError: invalid syntax

Fixed by adding the static nltk==3.4.5 in requirements.txt

[Romiko]

Yup, Same error. Does this mean I need to manually download this library and compile it from source?

[sloria]

@Romiko You need to pin to nltk==3.4.5 as suggested above.

[sloria]

https://github.com/sloria/TextBlob/pull/318 pins the NLTK version based on Python version, so that a compatible version of NLTK automatically gets installed.

For now, though, you'll just need to pin NLTK manually.