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.
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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.