How to run pip on windows? - python

How to run pip on windows?
I understand, that it may be very silly question, but all guides, entire web have same:
$ pip install <package>
But where should I find this "$"? It is not Windows console. It is not Python console. It is not different combinations of them. Where should I find this magical "$" on Windows?

When you install pip (via get-pip.py or etc) it installs into your python directory in the subfolder \Lib\site-packages. It also puts a pip.exe in your %python%\scripts folder. If you add C:\python-install-directory\scripts to your PATH you should be able to run it from the command line:
$ pip install <package>
The $ you see is the standard *nix terminal. Windows uses a > after the working directory, *nix uses a $. It is safely ignored.

Try this it helped me to solve the problem
py -m pip <your command>
"-m" should handle all your path related problems

Related

CMDER not finding sudo and pip commands

So I have been using regular windows command prompt and wanted to try using bash as most forums give commands in bash and it's a little cumbersome to try to find the translation to windows. Currently trying out Spotify API and I want to run a virtual environment.
I do the following windows command and everything runs fine:
[WINDOWS]
python -m pip install virtualenv
this, does not:
[BASH]
pip install virtualenv
and I get returned bash: pip: command not found
SO I go to install pip using sudo easy_install pip and get returned bash: sudo: command not found.
I am running CMDER as admin in bash so I thought ok, I will try easy_install pip and returned bash: easy_install: command not found. SO i went to the actual python directory and went to install pip again and no luck.
Any insight on how I can address this?
[Windows]]1[Bash]2
You can try to install pip by downloading the get-pip.py from here and then run it using python get-pip.py
After that
You might need to set your Environment Variable to include PIP in your path. you can use Environment Variables in Control Panel and add the path to System Variables.
I ran into this issue as well. Not sure what causes it, but switching to cmd.exe and running pip install ... worked without issue.

Using pip on Windows installed with both python 2.7 and 3.5

I am using Windows 10. Currently, I have Python 2.7 installed. I would like to install Python 3.5 as well. However, if I have both 2.7 and 3.5 installed, when I run pip, how do I get the direct the package to be installed to the desired Python version?
You will have to use the absolute path of pip.
E.g: if I installed python 3 to C:\python35, I would use:
C:\> python35\Scripts\pip.exe install packagename
Or if you're on linux, use pip3 install packagename
If you don't specify a full path, it will use whichever pip is in your path.
Because usually i change my intepreter to run something(i got 2 diff projects with both 2 and 3), i use these solution:
Add path to the environment as usual (of course)
Rename ur python.exe , in my case i want to run python 3 using command python3 on my cmd. So i renamed my python.exe in python3.x directory with python3. Itll works with python 2 ofc.
Then to use pip in both python, i use this command.
python3 -m pip install 'somepackage'
and to run pip on python2
python -m pip install 'somepackage'
This is may not the best solution out there, but i like this one
** WINDOWS **
ref : https://datascience.com.co/how-to-install-python-2-7-and-3-6-in-windows-10-add-python-path-281e7eae62a
In my case, I have Python 2.7 and Python 3.4, with the Python Launcher for Windows.
This is the output when running this commands:
PS C:\> pip -V
pip 9.0.1 from c:\python27\lib\site-packages (python 2.7)
PS C:\> pip3 -V
pip 9.0.1 from C:\Python34\lib\site-packages (python 3.4)
I'll note that in my Python27\Scripts\ directory, I have pip.exe, pip2.exe and pip2.7.exe.
And in my Python34\Scripts\ directory, I have pip.exe, pip3.exe and pip3.4.exe.
So all of these .exe files help you when you have different versions of Python installed at the same time.
Of course, for this to work, you have to have the respective Scriptsdirectries in your Path system enviroment variable.
The answer from Farhan.K will work. However, I think a more convenient way would be to rename python35\Scripts\pip.exe to python35\Scripts\pip3.exe assuming python 3 is installed in C:\python35.
After renaming, you can use pip3 when installing packages to python v3 and pip when installing packages to python v2. Without the renaming, your computer will use whichever pip is in your path.
I would advise against ever calling any pip script directly (nor pip3, pip2.7.exe, anything like that).
Instead, a surefire way is to always prefer the explicit variant of calling pip's executable module for a specific Python interpreter:
path/to/pythonX.Y -m pip somecommand
path/to/venv/bin/python -m pip somecommand
C:\path\to\venv\Scripts\python.exe -m pip somecommand
There are many advantages to this, for example:
It is explicit for which Python interpreter the projects will be pip-installed (Python 2 or 3, inside the virtual environment or not, etc.)
For a virtual environment, one can pip-install (or do other things) without activating it: path/to/venv/bin/python -m pip install SomeProject
Under Windows this is the only way to safely upgrade pip itself path\to\venv\Scripts\python.exe -m pip install --upgrade pip
But yes, if all is perfectly setup, then python3 -m pip install SomeProject and pip3 install SomeProject should do the exact same thing, but there are way too many cases where there is an issue with the setup and things don't work as expected and users get confused (as shown by the many questions about this topic on this platform).
References
Brett Cannon's article "Why you should use python -m pip"
pip's documentation section on "Upgrading pip"
venv's documentation section on "Creating virtual environments": "You don’t specifically need to activate an environment [...]"
I ran across an issue with running pip with absolute path. This might be related to WinPython's installation routine and the order of installing Python 3.6 first, 2.7 second, or Python 3.6 being in the path.
No matter which pip was called, it was activating the 3.6 one:
λ C:\prog\WinPython-64bit-2.7.13.1Zero\python-2.7.13.amd64\Scripts\pip2.exe --version
pip 9.0.1 from C:\prog\WinPython-64bit-3.6.1.0Zero\python-3.6.1.amd64\lib\site-packages (python 3.6)
What finally did the trick was calling pip as a module of the respective python binary:
λ C:\prog\WinPython-64bit-2.7.13.1Zero\python-2.7.13.amd64\python.exe -m pip --version
pip 9.0.1 from C:\prog\WinPython-64bit-2.7.13.1Zero\python-2.7.13.amd64\lib\site-packages (python 2.7)
Hope that might help someone with similar issues.
I tried many things , then finally
pip3 install --upgrade pip worked for me as i was facing this issue since i had both python3 and python2.7 installed on my system.
mind the pip3 in the beginning and pip in the end.
And yes you do have to run in admin mode the command prompt and make sure if the path is set properly.
1-open command prompt and change direction using the command cd C:\Python35\Scripts
2- write the command pip3 install --upgrade pip
3- close the command prompt and reopen it again to return to the default direction and use the command pip3.exe install package_name to install any package you want

Recommended way to install a Python package with pip and no sudo privileges

I usually just use the command:
pip install --user <package>
but I've seen here that this:
pip install <package> --install-option="--prefix=~"
can also be used to bypass the need for sudo privileges. About this command the site says:
There is also a –user option with pip install, which installs into ~/.local. This is fine for the python module, but it puts the corr2 executable into ~/.local/bin, which is probably not in your path. The above command will instead install corr2 into ~/bin.
So apparently it does not behave the same way as the first command.
Is one way preferred over the other and if so why?
The official Python package installation guide is here:
https://packaging.python.org/en/latest/installing.html
It recommends creating Python virtual environments per project using virtualenv command (or python3.4 -m venv).
This is because if you are working with multiple Python projects they have different dependencies and having per project installation environments is the sane way to deal with this in Python.

Did I install pip correctly?

I'm new to python and the tutorial I'm using suggested for me to install four important packages (distribute, pip, nose and virtual env).
I've installed the first two using setup.py in Windows PowerShell
Problem is I can't figure out how to use pip. I've tried doing commands for pip in the cmd, python idle shell and powershell. All of them return something similar to pip is not defined or there is a syntax error
Here's what i type which results to syntax error
pip freeze
pip list --outdated
Anyone know if I've done something wrong installing pip?
Notes:
I'm using Windows 7
I've checked the Python2.7 directory and pip is in the Scripts folder.
I've also used help("modules") in the Python Idle shell and it lists pip in the modules
To add an answer to this question (it was provided in the comments by Joran Beasley), the issue here was that pip installs to the python/Scipts directory, but that was not in the path by default on Windows. Adding C:\Python27\Scripts to the path fixed the issue. This answer describes adding a directory to the path on Windows 7.
if you've ubuntu you have just to install the pip with aptget
sudo apt-get install python-pip

How to install virtualenv without using sudo?

I have easy_install and pip.
I had many errors on my Linux Mint 12, I just re-installed it and I want to install everything from scratch again.
This is one of the errors that I had. I received an interesting answer there:
Stop using su and sudo to run virtualenv.
You need to run virtualenv as your normal user.
You have created the virtualenv with sudo which is why you are getting these errors.
So how to install virtualenv without using sudo? Can i use pipor easy_install without using sudo? Or is there another way?
This solution is suitable in cases where no virtualenv is available system wide and you can not become root to install virtualenv. When I set up a debian for python development or deployment I always apt-get install python-virtualenv. It is more convenient to have it around than to do the bootstrap pointed out below. But without root power it may be the the way to go:
There is a bootstrap mechanism that should get you going.
Read: http://peak.telecommunity.com/DevCenter/EasyInstall#creating-a-virtual-python
In essence you would do this in your home directory in a unix environment:
Given your python is version 2.6
$ mkdir ~/bin
$ mkdir -p ~/lib/python2.6
$ mkdir -p ~/local/lib/python2.6/dist-packages
$ wget http://peak.telecommunity.com/dist/virtual-python.py
$ python virtual-python.py --no-site-packages
$ wget http://peak.telecommunity.com/dist/ez_setup.py
$ ~/bin/python ez_setup.py
$ ~/local/bin/easy_install virtualenv
$ ~/local/bin/virtualenv --no-site-packages thereyouare
There may be room for optimization. I don't like the local path. Just bin and lib would be nice. But it does its job.
You can also use the command below, it worked for me without sudo access.
You may also need to modify your PYTHONPATH environment variable using export, see this SO answer for more details.
pip install --user virtualenv
The general idea is to install virtualenv itself globaly, i.e. sudo easy_install virtualenv or sudo pip install virtualenv, but then create the actual virtual environment ("run virtualenv") locally.
http://opensourcehacker.com/2012/09/16/recommended-way-for-sudo-free-installation-of-python-software-with-virtualenv/ suggests the following:
curl -L -o virtualenv.py https://raw.githubusercontent.com/pypa/virtualenv/master/virtualenv.py
python virtualenv.py vvv-venv
. vvv-venv/bin/activate
pip install vvv
It seems to work well. It lets me install https://github.com/miohtama/vvv with pip.
If you get:
Cannot find sdist setuptools-*.tar.gz
Cannot find sdist pip-*.tar.gz
Try --extra-search-dir after downloading the tarballs at https://github.com/pypa/virtualenv/tree/develop/virtualenv_support
This worked for me:
pip install --target=$HOME/virtualenv/ virtualenv
cd somewhere/
python $HOME/virtualenv/virtualenv.py env
. env/bin/activate
Now I can pip install whatever I want (except for everything that needs to compile stuff with gcc and has missing dependencies such as the python development libraries and Python.h).
Basically the idea is to install virtualenv (or any other python package) into ${HOME}/.local. This is the most appropriate location since it is included into python path by default (and not only Python).
That you do by pip3 install virtualenv --prefix=${HOME}/.local (you may need to expand ${HOME}).
Make sure that you have export PATH=${HOME}/.local/bin:${PATH} in your ~/.profile (you may need to source ~/.profile it if just added)
I've created a "portable" version of virtualenv.
wget https://bitbucket.org/techtonik/locally/raw/tip/06.get-virtualenv.py
python 06.get-virtualenv.py
It downloads virtualenv.py script with dependencies into .locally subdir and executes it from there. Once that's done, the script with .locally/ subdir can be copied anywhere.
I solved my problem installing virtualenv for each user.
python3 -m pip install --user virtualenv
You might want to consider using Anaconda. It's a full-fledged Python distribution, that lives in a folder in e.g. your home directory. No sudo is necessary at any point and you get most of the popular packages.
$ wget https://.../Anaconda2-2.5.0-Linux-x86_64.sh # check the website for the exact URL, it can change
$ bash Anaconda2-2.5.0-Linux-x86_64.sh
$ conda install virtualenv
The easiest way I have seen so far is to install Anaconda.
It may be an overkill for you. For me the centOS running on the remote server had only python2.6 installed. Anaconda by default installs everything locally + it is python2.7
curl -O https://repo.continuum.io/archive/Anaconda2-4.2.0-Linux-x86_64.sh
Then
bash Anaconda2-4.2.0-Linux-x86_64.sh
Boom. You have all the packages like numpy and pip installed.
Then if you want virtualenv, just type
pip install virtualenv
sudo virtualenv -p python myenv1
sudo su
source myenv1/bin/activate
pip install mypackage
this is will install inside virtual environment
The lack of sudo is a common situation in many shared remote server.
It turns out, there is a simpler, lightweight, more secure solution. Just download an official "portable" virtualenv from here: https://bootstrap.pypa.io/virtualenv.pyz
And that is it! You can now run python virtualenv.pyz --help to your heart's content.
Official document: https://virtualenv.pypa.io/en/latest/installation.html#via-zipapp

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