Develop Reference

issue when attempting to install python library using pip [duplicate]

How can I use pip in oh-my-zsh? I was trying to install nltk through pip, but it told me zsh: command not found: pip. When I check plugins under .oh-my-zsh/custom/plugins, there is a folder named pip. I don't know what the problem is.
Edit:
$ echo $PATH
/home/xxx/bin:/usr/local/bin:/home/xxx/bin:/home/xxx/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
$ type pip
pip is an alias for noglob pip

Maybe you have installed both python2 and python3. python3 may have been installed later.
You may try to use pip3 instead of pip.
First, input the command:
pip3 -V
If you see the version, the pip3 can be used.
Then you can input command line to install nltk:
pip3 install nltk
I got a way to help you use pip in zsh. We can use nano to edit files. In nano, ctrl+X to save and exit
In the ~ directory, input the command:
nano .bash_profile
You may see some codes like:
# Setting PATH for Python 3.5
# The original version is saved in .bash_profile.pysave
PATH="/Library/Frameworks/Python.framework/Versions/3.5/bin:${PATH}"
export PATH
Copy them and paste them to the end of .zshrc file by using command:
nano .zshrc
Then input the command:
pip -V
If you see the version, pip can be used.

In case you do
which pip
and it doesn't show the path, just do
which pip3
This will print the path which is /usr/local/bin/pip3
Then do open ~/.zshrc or nano ~/.bash_profile.
Make alias for pip like:
alias pip=/usr/local/bin/pip3
N.B: You copy that line above and paste in your .zshrc file.
After do source ~/.zshrc and close .zshrc

For me it's working to do
python -m pip install [package_name]
instead of
pip install [package_name]

If you installed python3.x, you should run with pip3(not pip)

So you are using oh-my-zsh framework for zsh or Z shell.
First, try the command:
pip3 -V
If you get something like this below, that means you have the pip3 package already and must be having python3 as well.
pip 22.0.4 from /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/pip (python 3.10)
Then edit your .zprofile instead of .bashprofile as you are using zsh. This is the command.
nano ~/.zprofile
Then it should have the two alias like this.
# Setting PATH for Python 3.10
# The original version is saved in .zprofile.pysave
PATH="/Library/Frameworks/Python.framework/Versions/3.10/bin:${PATH}"
export PATH
alias python=python3
alias pip=pip3
Make sure you save it. Exit and Re-open you terminal. Type the command:
pip -V
It should have the same result as the pip3 -V like this:
❯ pip -V
pip 22.0.4 from /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/pip (python 3.10)
Then you can use pip or pip3 interchangeably for installing your nltk package like this.
pip install nltk

I'm on MacOS and use ZSH. It seems pip 2.7 can't be found, although it is installed. I believe my paths to "pip" are linked wrong (I also have python3 and pip3 installed via brew).
To get around the issue I created an alias. If you don't have an .aliases file, create one in your homedir. Then open the file:
nano ~/.aliases
and add:
## PIP for python2.7 ##
alias pip="python -m pip "
You need to tell ZSH to pick up the alias file (assuming you don't have this setup already). Open your .zshrc:
nano ~/.zshrc
The add the following near the bottom of the file:
[ -f "$HOME/.aliases" ] && source "$HOME/.aliases"
From the terminal, run:
source ~/.zshrc
Or quit your terminal and reopen it.
Now you can run:
pip install <command>

Edit your rc file:
vim ~/.zshrc
Find the config plugins and delete the pip entry.
In a new terminal:
which pip
This will show you the real path of pip

If you're running into this issue, it probably is due to versioning complications. Python 2 versus Python 3 on your OS may be resolving unexpectedly. Below is a quick workaround to get you to functioning behavior.
Try using the below for Python 2:
python -m pip install <command>
Try using the below for Python 3:
pip3 install <command>

In my case my OS was Ubuntu 20.04 and the pip doesn't come with python.
So, i've installed pip through the command
sudo apt install python3-pip
and I'm done.
To ensure run pip -V or pip3 -V

My pip script is missing for some reason, so I have to install it.
$ python -m ensurepip --upgrade
More methods can be found here:pip installation

You should consider upgrading.
Enter this in your terminal
/Library/Frameworks/Python.framework/Versions/3.10/bin/python3.10 -m pip install --upgrade pip
and then...
Type: pip -V

Issue in installing AWS EB CLI

I'm following this instruction to install eb cli, but it raise this error:
Will not install to the user site because it will lack sys.path precedence to python-dateutil in c:\virtual envs\python_XXXX\lib\site-packages
https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/eb-cli3-install-windows.html
I basically run this pip command:
pip install awsebcli --upgrade --user
On Python 3.8 in a virtual env

If you are installing within a virtual environment, run the same command, but without --user. Refer to this issue here https://github.com/pypa/pip/issues/573

Installed pytest but running `pytest` in bash returns `not found`

I am following the python-django tutorial in Vagrant (Ubuntu 18.04 / Python3.6.6). After running pip3 install pytest-django and configuring pytest.ini file, running pytest returns
Command 'pytest' not found, but can be installed with:
apt install python-pytest
Please ask your administrator.
pip3 freeze output:
pytest==3.10.0
pytest-django==3.4.3
Is there something else to the installation?

Try python -m pytest
Installing pytest via pip doesn't make it a system command, it installs it to python. The -m command runs pytest as its own command and then any proceeding script will be an argument.

I got problem when I wanted to run the following code in .sh file.
pytest-3 -s test.py
To solve it I get solution from linux itself as follows:
sudo apt install python3-pytest

Access is denied when trying to pip install a package on Windows

How to set path for python 3.7.0?
I tried the every possible way but it still shows the error!
Could not install packages due to an EnvironmentError: [WinError 5]
Access is denied: 'c:\program files (x86)\python37-32\lib\site-packages\pip-10.0.1.dist-info\entry_points.txt'
Consider using the --user option or check the permissions

Add --user to the command.
eg:
pip install -r requirements.txt --user

Append the --user modifier to your command as suggested in the error.
--user makes pip install packages in your home directory instead, which doesn't require any special privileges.
More: What is the purpose "pip install --user ..."?

Run your command Prompt on Admin-Mode in Windows,it will stop throwing errors for user-rights.
Steps:
On Windows, type "Cmd" on searchbox to search for command prompt.
When "Command Prompt" search result appears,right-click>Run as Administrator.

You can add --user in the end of your command. This works well in my case!
--user
My example:
python -m pip install --upgrade pip --user

Just try on Administrator cmd
pip install --user numpy

Run your command prompt on admin mode.
type :
cd\
then type:
cd [Your python location path]
on mycomputer it's:
cd C:\Users\hp\AppData\Local\Programs\Python\Python37-32
then type:
python -m pip install --upgrade pip
You can follow this guide~
https://datatofish.com/upgrade-pip/

I had the same problem.
After installing Python for all the users, wanted to install Django.
For that I've gone to the Command Prompt (without using Admin mode) and
pip.exe install django==2.2
This prompted the following message
Could not install packages due to an EnvironmentError: [WinError 5]
Access is denied: 'c:\program
files\python37\lib\site-packages\pip-19.0.3.dist-info\entry_points.txt'
Consider using the --user option or check the permissions.
The way I've used to solve it was to add --user in the end of the command, just like the prompt message suggests («Consider using the --user»).
pip.exe install django==2.2 --user
Then everything worked fine.

The question was for windows but if any linux users that stumbled here (like me) : Permission Error Persists by adding --user in my virtualenv on Ubuntu 19 when I want to generate requirements.txt. Also, I can't pip install --user as well since I'm in an virtualenv. My solution was just using sudo pip3 install pipreqs to install another pipreqs for super user.

I wanted to throw an answer out here because I've been against a rock wall since upgrading to python 3.18. Pip install stopped working with a module error which was rectified with py -m pip install --user. but I would still get this permissions error. I uninstalled, reinstalled, and downgraded Python and Pip. I ran command prompt as administrator. None of it worked.
The only thing that worked was to pip download and then pip install the package from my c:/ drive. Totally BS workaround, but if you'r as stuck as I was it works.

Changing paths to fix Mac OSX:` -bash: jupyter: command not found`?

This question has been covered previously on SO, but the recommended fixes didn't work.
I have installed Jupyter both with pip install jupyter --upgrade and macports port install py34-jupyter but I cannot access the command jupyter via the command line.
When executing pip install jupyter, the message is:
Requirement already satisfied: jupyter in /opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages
This is also where pip is located. I have also tried
pip uninstall notebook
pip install notebook --upgrade
but this didn't work.
Inside /opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages, I see:
jupyter-1.0.0-py3.4.egg-info
jupyter-1.0.0.dist-info
jupyter.py
jupyter_client
jupyter_client-4.4.0-py3.4.egg-info
jupyter_client-4.4.0.dist-info
jupyter_console
jupyter_console-5.0.0-py3.4.egg-info
jupyter_console-5.0.0.dist-info
jupyter_core
jupyter_core-4.2.0.dist-info
jupyter_core-4.2.1-py3.4.egg-info
I thought perhaps it was possible that the command jupyter does not have the correct path to the executable necessary, but this doesn't appear to be the case.
How can I have access to jupyter notebook?

If you are using python on mac, I would strongly recommend using a virtualenv and installing all your dependencies using that. Had issues with installing and using several libraries.
pip install virtualenv virtualenvwrapper
# Create a backup of your .bash_profile
cp ~/.bash_profile ~/.bash_profile-org
# Be careful with this command
printf '\n%s\n%s\n%s' '# virtualenv' 'export WORKON_HOME=~/virtualenvs' \
'source /usr/local/bin/virtualenvwrapper.sh' >> ~/.bash_profile
source ~/.bash_profile
mkdir -p $WORKON_HOME
mkvirtualenv your_virtual_env
This creates the virtual environment
deactivate
When you are out of virtual env, you can uninstall jupyter from your machine using pip uninstall jupyter
workon your_virtual_env
pip install jupyter