how to check which version of nltk scikit learn installed

Question

In shell script I am checking whether this packages are installed or not  if not installed then install it  So withing shell script   import nltk echo nltk   version     but it stops shell script at import line  in linux terminal tried to see in this manner   which nltk   which gives nothing thought it is installed   Is there any other way to verify this package installation in shell script  if not installed  also install it

User · Answer

You can find NLTK version simply by doing:

In [1]: import nltk

In [2]: nltk.__version__
Out[2]: '3.2.5'

And similarly for scikit-learn,

In [3]: import sklearn

In [4]: sklearn.__version__
Out[4]: '0.19.0'

I'm using python3 here.

User · Answer

Try this     python -c  import nltk  print nltk   version

User · Answer

For checking the version of scikit-learn in shell script  if you have pip installed  you can try this command  pip freeze   grep scikit-learn scikit-learn  0 17 1   Hope it helps

User · Answer

import nltk is Python syntax  and as such won t work in a shell script   To test the version of nltk and scikit learn  you can write a Python script and run it  Such a script may look like  import nltk import sklearn  print  The nltk version is      format nltk   version     print  The scikit-learn version is      format sklearn   version        The nltk version is 3 0 0    The scikit-learn version is 0 15 2    Note that not all Python packages are guaranteed to have a   version   attribute  so for some others it may fail  but for nltk and scikit-learn at least it will work

User · Answer

In my machine which is ubuntu 14 04 with python 2 7 installed  if I go here    usr local lib python2 7 dist-packages nltk    there is a file called  VERSION   If I do a cat VERSION it prints 3 1  which is the NLTK version installed

User · Answer

you may check from a python notebook cell as follows   pip install --upgrade nltk       needed if nltk is not already installed import nltk       print  The nltk version is      format nltk   version     print  The nltk version is    str nltk   version       and     pip install --upgrade sklearn        needed if sklearn is not already installed import sklearn print  The scikit-learn version is      format sklearn   version     print  The scikit-learn version is    str nltk   version

User · Answer

In Windows   systems you can simply try   pip3 list   findstr scikit  scikit-learn                  0 22 1   If you are on Anaconda try  conda list scikit  scikit-learn              0 22 1           py37h6288b17 0   And this can be used to find out the version of any package you have installed  For example  pip3 list   findstr numpy  numpy                         1 17 4 numpydoc                      0 9 2   Or if you want to look for more than one package at a time  pip3 list   findstr  scikit numpy   numpy                         1 17 4 numpydoc                      0 9 2 scikit-learn                  0 22 1   Note the quote characters are required when searching for more than one word   Take care

[python] how to check which version of nltk, scikit learn installed?

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