In this tutorial, you will learn –
![]() Installing NLTK in Windows
In this part, we will learn that how to make setup NLTK via terminal (Command prompt in windows).
May 14, 2014 I am not sure whether this is a problem in pip, wheel or a fundamental incompatibility in the 2 builds of the Python interpreter. I think the default travis-ci should make it easy for python project maintainers to build wheels that they can upload to pypi for their OSX users.
The instruction given below are based on the assumption that you don't have python installed. So, first step is to install python.
Installing Python in Windows:
Step 1) Go to link https://www.python.org/downloads/, and select the latest version for windows.
Note: If you don't want to download the latest version, you can visit the download tab and see all releases.
Step 2) Click on the Downloaded File
Step 3)Select Customize Installation
Step 4) Click NEXT
Step 5) In next screen
Step 6) Click Close button once install is done.
Step 7) Copy the path of your Scripts folder.
Step 8) In windows command prompt
NOTE: For Python2 use the commandpip2 install nltk
Step 9) In Windows Start Menu, search and open PythonShell
Step 10) You can verify whether the installation is accurate supplying the below command
If you see no error, Installation is complete.
Installing NLTK in Mac/Linux
Installing NLTK in Mac/Unix requires python package manager pip to install nltk. If pip is not installed, please follow the below instructions to complete the process
Step1) Update the package index by typing the below command
Step2) Installing pip for Python 3:
You can also install pip using easy_install.
Now easy_install is installed. Run the below command to install pip
Step3)Use following command to install NLTK
Installing NLTK through Anaconda
Step1) Please install anaconda (which can also be used to install different packages) by visiting https://www.anaconda.com/download/ and select which version of python you need to install for anaconda.
Note: Refer to this tutorial for detailed steps to install anaconda
Step 2)In the Anaconda prompt,
NLTK Dataset
NLTK module has many datasets available that you need to download to use. More technically it is called corpus. Some of the examples are stopwords, gutenberg, framenet_v15, large_grammarsand so on.
How to Download all packages of NLTK
Step 1)Run the Python interpreter in Windows or Linux
Step 2)
NOTE: You can change the download location by Clicking File> Change Download Directory
Step 3) To test the installed data use the following code
['The', 'Fulton', 'County', 'Grand', 'Jury', 'said', ...]
Running the NLP Script
We are going to discuss how NLP script will be executed on our local PC. There are many libraries for Natural Language Processing present in the market. So choosing a library depends on fitting your requirements. Here is the list of NLP libraries.
How to Run NLTK Script
Step1) In your favorite code editor, copy the code and save the file as 'NLTKsample.py '
Code Explanation:
Step2)In the command prompt
This will show output as :
['Hello', 'Guru99', 'You', 'have', 'build', 'a', 'very', 'good', 'site', 'and', 'I', 'love', 'visiting', 'your', 'site']
Luigi BallabioPrerequisites
The following assumes that you already installed QuantLib (butfirst, you might consider installing from PyPI; readbelow). Instructions for that are availableat http://quantlib.org/install/macosx.shtml. Inparticular, check that you have provided the required options andenvironment variables to ./configure.
QuantLib-Python InstallationInstallation from PyPI
If you don't need to modify the wrappers, you might want to tryinstalling a precompiled binary version. The availability of binaries depend on your operating system; to try to install them, run:
(note that the
pip executable might becalled pip2 or pip3 on your system). If abinary package is available for your system, it will be installed andyou will be able to leave this page and use it right away; if not,you'll have to compile it yourself as described in the nextsection.
Installation from a released version
You can download released QuantLib-SWIG versions from Bintrayat https://bintray.com/quantlib/releases/QuantLib-SWIG.
Once you have the tarball, extract it by executing:
(1.8 is the most recent version at the time of this writing; youmight have downloaded another one, but take care to use one compatiblewith the version of QuantLib you installed.) This creates afolder
QuantLib-SWIG-1.8 ; enter it and configure QuantLibby executing:
On Mac OS X 10.11 (El Capitan) and later,
On Mac OS X 10.9 (Mavericks) and 10.10 (Yosemite),
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On earlier systems,
Contrary to popular belief, working from a releasedtarball doesn't require you to have SWIGinstalled. After configuration, you can run
There are a few caveats to the above. The first isthat the
./configure command will need toinvoke quantlib-config (which was installed withQuantLib) to find out what flags should be passed to the compiler andlinker; they will also include the additional include directories youmight have specified when you built QuantLib, so you'll be coveredeven if you have, say, Boost in a non-standard place. This meansthat quantlib-config must be in your path. If youinstalled QuantLib in /usr/local like Homebrew orin /opt/local like MacPorts, you should be already setup.
The second is that the callto
./configure as written above will find the systeminstallation of Python. If you want to use a different one (forinstance because you installed Python 3, or you want to use anAnaconda installation) you must pass the location of your chosenPython interpreter to ./configure ; for instance, if youhave Python 3 installed as /usr/local/bin/python3 , you'llhave to run:
The third is that, unfortunately, at thistime
make install ignores any prefix you might passto ./configure and always installs to the defaultlocation, which usually requires you to use sudo as Iwrote above. If you don't have admin rights, or if you want to installto a different location, you can run:replacing /your/desired/location with the actual path whereyou want to install (if the path is protected, you might still need touse sudo to run the command).
Once you're done, you can try to run a few examples to check yourinstallation. To do this, you can execute:
Installation from a git repository
If you want to compile from a checkout of a git repository (such asthe official oneat https://github.com/lballabio/quantlib-swig,or a fork of it that you might have created) you'll need an additionalstep at the beginning of the process. Before runningthe
./configure script, you'll have to create it byexecuting
To do this, you'll need automake, autoconf and libtool. They can beinstalled using either Homebrew or MacPorts.
After the execution of ./autogen.sh , the installationproceeds as in the previous section. Note, though, that in this caseyou'll need SWIG available; you can download and install itfrom http://swig.org or, again, get itpackaged from Homebrew or MacPorts.
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