Last updated: Apr 8, 2024
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The Python "ModuleNotFoundError: No module named 'nltk'" occurs when we forget
to install the nltk
module before importing it or install it in an incorrect
environment.
To solve the error, install the module by running the pip install nltk
command.
Open your terminal in your project's root directory and install the nltk
module.
# ๐๏ธ In a virtual environment or using Python 2 pip install nltk # ๐๏ธ For Python 3 (could also be pip3.10 depending on your version) pip3 install nltk # ๐๏ธ If you get a permissions error sudo pip3 install nltk pip install nltk --user # ๐๏ธ If you don't have pip in your PATH environment variable python -m pip install nltk # ๐๏ธ For Python 3 (could also be pip3.10 depending on your version) python3 -m pip install nltk # ๐๏ธ Using py alias (Windows) py -m pip install nltk # ๐๏ธ For Anaconda conda install -c anaconda nltk # ๐๏ธ For Jupyter Notebook !pip install nltk
After you install the nltk package, try importing it like:
import nltk print(nltk.__version__) nltk.download() sentence = """At eight o'clock on Thursday morning Arthur didn't feel very good.""" tokens = nltk.word_tokenize(sentence) print(tokens)
The error occurs for multiple reasons:
nltk
package installed by running pip install nltk
.nltk.py
which would shadow the official module.nltk
which would shadow the imported variable.If the error persists, get your Python version and make sure you are installing the package using the correct Python version.
python --version
For example, my Python version is 3.10.4
, so I would install the nltk
package with pip3.10 install nltk
.
pip3.10 install nltk # ๐๏ธ If you get a permissions error use pip3 (NOT pip3.X) sudo pip3 install nltk
Notice that the version number corresponds to the version of pip
I'm using.
If the PATH for pip
is not set up on your machine, replace pip
with
python3 -m pip
:
# ๐๏ธ Make sure to use your version of Python, e.g. 3.10 python3 -m pip install nltk
If the error persists, try restarting your IDE and development server/script.
You can
check if you have the nltk
package installed
by running the pip show nltk
command.
# ๐๏ธ Check if you have `nltk` installed pip show nltk # ๐๏ธ If you don't have pip set up in PATH python -m pip show nltk
The pip show nltk
command will either state that the package is not installed
or show a bunch of information about the package, including the location where
the package is installed.
If the package is not installed, make sure your IDE is using the correct version of Python.
nltk
package using the incorrect version or your IDE might be set up to use a different version.For example, In VSCode, you can press CTRL + Shift + P
or (โ
+ Shift
+ P
on Mac) to open the command palette.
Then type "Python select interpreter" in the field.
Then Select the correct Python version from the dropdown menu.
If you are using a virtual environment, make sure you are installing nltk
in
your virtual environment and not globally.
You can try creating a virtual environment if you don't already have one.
# ๐๏ธ Use the correct version of Python when creating VENV python3 -m venv venv # ๐๏ธ Activate on Unix or MacOS source venv/bin/activate # ๐๏ธ Activate on Windows (cmd.exe) venv\Scripts\activate.bat # ๐๏ธ Activate on Windows (PowerShell) venv\Scripts\Activate.ps1 # ๐๏ธ Install `nltk` in your virtual environment pip install nltk
If the python3 -m venv venv
command doesn't work, try the following 2
commands:
python -m venv venv
py -m venv venv
Your virtual environment will use the version of Python that was used to create it.
nltk.py
because that would shadow the original nltk
module.You also shouldn't be declaring a variable named nltk
as that would also
shadow the original module.
If the error is not resolved, try to uninstall the nltk
package and then
reinstall it.
# ๐๏ธ Check if you have `nltk` installed pip show nltk # ๐๏ธ If you don't have pip set up in PATH python -m pip show nltk # ๐๏ธ Uninstall nltk pip uninstall nltk # ๐๏ธ If you don't have pip set up in PATH python -m pip uninstall nltk # ๐๏ธ Install nltk pip install nltk # ๐๏ธ If you don't have pip set up in PATH python -m pip install nltk
Try restarting your IDE and development server/script.
You can also try to upgrade the version of the nltk
package.
pip install nltk --upgrade # ๐๏ธ If you don't have pip set up in PATH python -m pip install nltk --upgrade
nltk
.To install the nltk
module on Windows:
pip install nltk
and press Enter.pip install nltk --upgrade # ๐๏ธ For Python 3 pip3 install nltk --upgrade # ๐๏ธ If you don't have pip in your PATH environment variable python -m pip install nltk --upgrade # ๐๏ธ For Python 3 python3 -m pip install nltk --upgrade # ๐๏ธ Using py alias py -m pip install nltk --upgrade # ๐๏ธ If you get a permissions error pip install nltk --user --upgrade # ๐๏ธ For Anaconda conda install -c anaconda nltk
If the command doesn't succeed, try running CMD as an administrator.
If you get the error
'pip' is not recognized as an internal or external command,
use the python -m
command when installing nltk
.
python -m pip install nltk --upgrade python3 -m pip install nltk --upgrade py -m pip install nltk --upgrade
Alternatively, you can install the nltk
module in a virtual environment:
Shift
and right-click in Explorer.# ๐๏ธ Might also be: "python3 -m venv venv" python -m venv venv # ๐๏ธ Activate on Windows (PowerShell) venv\Scripts\Activate.ps1 # ๐๏ธ Activate on Windows (cmd.exe) venv\Scripts\activate.bat # ๐๏ธ Install nltk in your virtual environment pip install nltk
If the python -m venv venv
command doesn't work, try the following 2 commands:
python3 -m venv venv
py -m venv venv
.If you see an error message that ps1 cannot be loaded because running scripts is disabled on this system, run the following command, type "yes" when prompted and rerun the activation command.
Set-ExecutionPolicy RemoteSigned -Scope CurrentUser
nltk
module is installed by using the pip show nltk
command.pip show nltk pip3 show nltk python -m pip show nltk python3 -m pip show nltk
The pip show nltk
command will either state that the package is not installed
or show a bunch of information about the package, including the location where
the package is installed.
To install NLTK on macOS or Linux:
pip install nltk
and press Enter.pip install nltk --upgrade # ๐๏ธ For Python 3 pip3 install nltk --upgrade # ๐๏ธ If you get a permissions error sudo pip3 install nltk --upgrade # ๐๏ธ If you don't have pip in your PATH environment variable python -m pip install nltk --upgrade # ๐๏ธ For Python 3 python3 -m pip install nltk --upgrade # ๐๏ธ Alternative if you get a permissions error pip install nltk --user --upgrade # ๐๏ธ For Anaconda conda install -c anaconda nltk
If you get an error that pip
isn't found, use the python -m
command.
python -m pip install nltk --upgrade python3 -m pip install nltk --upgrade
If you get a permissions error, prefix the command with sudo
.
sudo pip install nltk --upgrade sudo pip3 install nltk --upgrade
Alternatively, you can install the nltk
package in a virtual environment:
# ๐๏ธ Could also be "python -m venv venv" python3 -m venv venv # ๐๏ธ Activate virtual env on macOS or Linux source venv/bin/activate # ๐๏ธ Install nltk in your virtual environment pip install nltk
Your virtual environment will use the version of Python that was used to create it.
python3 -m venv venv
command doesn't work, use python -m venv venv
instead.You can use the pip show
command to verify
nltk
has been installed
successfully.
pip show nltk pip3 show nltk python -m pip show nltk python3 -m pip show nltk
The pip show nltk
command will either state that the package is not installed
or show a bunch of information about the package.
To install nltk in Visual Studio Code:
pip install nltk
command to install the nltk
module.pip install nltk --upgrade # ๐๏ธ For Python 3 pip3 install nltk --upgrade # ๐๏ธ If you get a permissions error sudo pip3 install nltk --upgrade # ๐๏ธ If you don't have pip in your PATH environment variable python -m pip install nltk --upgrade # ๐๏ธ For Python 3 python3 -m pip install nltk --upgrade # ๐๏ธ Using py alias py -m pip install nltk --upgrade # ๐๏ธ Alternative if you get a permissions error pip install nltk --user --upgrade
CTRL+Shift+P
and then type "View: Toggle Terminal".When installing Python modules in Visual Studio code, make sure that your IDE is configured to use the correct Python version.
Press CTRL+Shift+P
or (โ
+ Shift
+ P
on Mac) to open the command
palette.
Then type "Python select interpreter" in the field.
Then Select the correct Python version from the dropdown menu.
You can use the python --version
command if you need to get your version of
Python.
python --version python3 --version
You can also try creating a virtual environment if you don't already have one.
# ๐๏ธ Could also be "python -m venv venv" or "py -m venv venv" python3 -m venv venv # ๐๏ธ Activate on Unix or MacOS source venv/bin/activate # ๐๏ธ Activate on Windows (cmd.exe) venv\Scripts\activate.bat # ๐๏ธ Activate on Windows (PowerShell) venv\Scripts\Activate.ps1 # ๐๏ธ Install nltk in your virtual environment pip install nltk
Your virtual environment will use the version of Python that was used to create it.
To install NLTK in PyCharm:
Alt+F12
on your keyboard to open the terminal.pip install nltk
command to install the nltk
module.pip install nltk --upgrade # ๐๏ธ For Python 3 pip3 install nltk --upgrade # ๐๏ธ If you get a permissions error sudo pip3 install nltk --upgrade # ๐๏ธ If you don't have pip in your PATH environment variable python -m pip install nltk --upgrade # ๐๏ธ For Python 3 python3 -m pip install nltk --upgrade # ๐๏ธ Using py alias py -m pip install nltk --upgrade # ๐๏ธ Alternative if you get a permissions error pip install nltk --user --upgrade
Alternatively, you can use the IDE itself to install the module.
+
icon and type nltk
.Click on "File" > "Settings" > "Project" > "Python Interpreter".
Then Select the correct Python version from the dropdown menu.
You can use the python --version
command if you need to get your version of
Python.
python --version python3 --version
To install NLTK in Anaconda:
nltk
in the search bar to the right.nltk
package and click on "Apply".Alternatively, you can install the nltk
package with a command.
If you are on Windows, search for "Anaconda Prompt" and open the application.
If you are on macOS or Linux, open your terminal.
Run the following command to install the nltk
package.
# ๐๏ธ Using conda conda install -c anaconda nltk # ๐๏ธ Alternatively use `pip` pip install nltk --upgrade # ๐๏ธ For Python 3 pip3 install nltk --upgrade # ๐๏ธ If you get a permissions error sudo pip3 install nltk --upgrade # ๐๏ธ If you don't have pip in your PATH environment variable python -m pip install nltk --upgrade # ๐๏ธ For Python 3 python3 -m pip install nltk --upgrade # ๐๏ธ Using py alias py -m pip install nltk --upgrade # ๐๏ธ Alternative if you get a permissions error pip install nltk --user --upgrade
Click on the following article if you need to install a specific version of the package using Anaconda.
To install NLTK in Jupyter Notebook:
pip install nltk
and press Enter.# ๐๏ธ Using pip pip install nltk --upgrade # ๐๏ธ For Python 3 pip3 install nltk --upgrade # ๐๏ธ If you get a permissions error sudo pip3 install nltk --upgrade # ๐๏ธ If you don't have pip in your PATH environment variable python -m pip install nltk --upgrade # ๐๏ธ For Python 3 python3 -m pip install nltk --upgrade # ๐๏ธ Using py alias py -m pip install nltk --upgrade # ๐๏ธ Using conda conda install -c anaconda nltk # ๐๏ธ Alternative if you get a permissions error pip install nltk --user --upgrade
Alternatively, you can use the Python ipykernel.
Click on "New" and then click on "Python 3 (ipykernel)".
Type !pip install nltk
and click on "Run".
Note that the pip install
command must be prefixed with an exclamation mark if
you use this approach.
!pip install nltk --upgrade
Once you type the command, click "Run" to install the nltk
module.
If you get a permissions error, e.g. "[WinError: 5] Access is denied", add the
--user
option to the installation command.
!pip install nltk --user --upgrade
If the error persists, try to restart the Jupyter Kernel and rerun the command.