Btukfyl

I was able to install pip for python 3 on Ubuntu just by running sudo apt-get install python3-pip.

Python 3.4+ and Python 2.7.9+

Good news! Python 3.4 (released March 2014) ships with Pip. This is the best feature of any Python release. It makes the community's wealth of libraries accessible to everyone. Newbies are no longer excluded by the prohibitive difficulty of setup. In shipping with a package manager, Python joins Ruby, Nodejs, Haskell, Perl, Go--almost every other contemporary language with a majority open-source community. Thank you Python.

Of course, that doesn't mean Python packaging is problem solved. The experience remains frustrating. I discuss this at Does Python have a package/module management system?

Alas for everyone using an earlier Python. Manual instructions follow.

Python ≤ 2.7.8 and Python ≤ 3.3

Follow my detailed instructions at https://stackoverflow.com/a/12476379/284795 . Essentially

Official instructions

Per https://pip.pypa.io/en/stable/installing.html

Download get-pip.py, being careful to save it as a .py file rather than .txt. Then, run it from the command prompt.

python get-pip.py

You possibly need an administrator command prompt to do this. Follow http://technet.microsoft.com/en-us/library/cc947813(v=ws.10).aspx

For me, this installed Pip at C:Python27Scriptspip.exe. Find pip.exe on your computer, then add its folder (eg. C:Python27Scripts) to your path (Start / Edit environment variables). Now you should be able to run pip from the command line. Try installing a package:

pip install httpie

There you go (hopefully)!

For Ubuntu 12.04 or older,

sudo apt-get install python3-pip

won't work. Instead, use:

sudo apt-get install python3-setuptools ca-certificates

sudo easy_install3 pip

Update 2015-01-20:

As per https://pip.pypa.io/en/latest/installing.html the current way is:

wget https://bootstrap.pypa.io/get-pip.py

python get-pip.py

I think that should work for any version

Original Answer:

wget http://python-distribute.org/distribute_setup.py

python distribute_setup.py

easy_install pip

python3 -m ensurepip

I'm not sure when exactly this was introduced, but it's installed pip3 for me when it didn't already exist.

if you're using python 3.4+

just type:

python3 -m pip

Single Python in system

To install packages in Python always follow these steps:

1. If the package is for python 2.x: sudo python -m pip install [package]
   


2. If the package is for python 3.x: sudo python3 -m pip install [package]
   

Note: This is assuming no alias is set for python

Through this method, there will be no confusion regarding which python version is receiving the package.

Multiple Pythons

Say you have python3 ↔ python3.6 and python3.7 ↔ python3.7

1. To install for python3.6: sudo python3 -m pip install [package]
   


2. To instal for python3.7: sudo python3.7 -m pip install [package]
   

This is essentially the same method as shown previously.

Note 1

How to find which python, your python3 command spawns:

ganesh@Ganesh:~$ python3 # Type in terminal

Python 3.6.6 (default, Sep 12 2018, 18:26:19) # Your python3 version

[GCC 8.0.1 20180414 (experimental) [trunk revision 259383]] on linux

Type "help", "copyright", "credits" or "license" for more information.

>>>

Notice python 3.6.6 in the second line.

Note 2

Change what python3 or python points to: https://askubuntu.com/questions/320996/how-to-make-python-program-command-execute-python-3

Older version of Homebrew

If you are on macOS, use homebrew.

brew install python3 # this installs python only

brew postinstall python3 # this command installs pip

Also note that you should check the console if the install finished successfully. Sometimes it doesn't (e.g. an error due to ownership), but people simply overlook the log.

UPDATED - Homebrew version after 1.5

According to the official Homebrew page:

On 1st March 2018 the python formula will be upgraded to Python 3.x and a python@2 formula will be added for installing Python 2.7 (although this will be keg-only so neither python nor python2 will be added to the PATH by default without a manual brew link --force). We will maintain python2, python3 and python@3 aliases.

So to install Python 3, run the following command:

brew install python3

Then, the pip is installed automatically, and you can install any package by pip install <package>.

If you use several different versions of python try using virtualenv http://www.virtualenv.org/en/latest/virtualenv.html#installation

With the advantage of pip for each local environment.

Then install a local environment in the current directory by:

virtualenv -p /usr/local/bin/python3.3 ENV --verbose

Note that you specify the path to a python binary you have installed on your system.

Then there are now an local pythonenvironment in that folder. ./ENV

Now there should be ./ENV/pip-3.3

use
./ENV/pip-3.3 freeze to list the local installed libraries.

use ./ENV/pip-3.3 install packagename to install at the local environment.

use ./ENV/python3.3 pythonfile.py to run your python script.

Here is my way to solve this problem at ubuntu 12.04:

sudo apt-get install build-essential libncursesw5-dev libssl-dev libgdbm-dev libc6-dev libsqlite3-dev tk-dev

Then install the python3 from source code:

wget https://www.python.org/ftp/python/3.4.0/Python-3.4.0.tar.xz

tar xvf Python-3.4.0.tar.xz

cd Python-3.4.0

./configure

make

make test

sudo make install

When you finished installing all of them, pip3 will get installed automatically.

This is what I did on OS X Mavericks to get this to work.

Firstly, have brew installed

Install python 3.4

brew install python3

Then I get the latest version of distribute:

wget https://pypi.python.org/packages/source/d/distribute/distribute-0.7.3.zip#md5=c6c59594a7b180af57af8a0cc0cf5b4a



unzip distribute-0.7.3.zip

cd distribute-0.7.3

sudo setup.py install

sudo easy_install-3.4 pip

sudo pip3.4 install virtualenv

sudo pip3.4 install virtualenvwrapper



mkvirtualenv py3 



python --version

Python 3.4.1

I hope this helps.

For python3 try this:

wget https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py -O - | python

The good thing is that It will also detect what version of python you have (even if it's an environment of python in your custom location).
After this you can proceed normally with (for example)

pip install numpy

source:
https://pypi.python.org/pypi/setuptools/1.1.6#upgrading-from-setuptools-0-6

Assuming you are in a highly restricted computer env (such as myself) without root access or ability to install packages...

I had never setup a fresh/standalone/raw/non-root instance of Python+virtualenv before this post. I had do quite a bit of Googling to make this work.

1. Decide if you are using python (python2) or python3 and set your PATH correctly. (I am strictly a python3 user.) All commands below can substitute python3 for python if you are python2 user.


2. wget https://pypi.python.org/packages/source/v/virtualenv/virtualenv-x.y.z.tar.gz


3. tar -xzvf virtualenv-x.y.z.tar.gz


4. python3 virtualenv-x.y.z/virtualenv.py --python $(which python3) /path/to/new/virtualenv


5. 
   source /path/to/new/virtualenv/bin/activate
   
   
   
   • Assumes you are using a Bourne-compatible shell, e.g., bash
   
   
   • Brilliantly, this virtualenv package includes a standalone version of pip and setuptools that are auto-magically installed into each new virtualenv. This solves the chicken and egg problem.
   
   
   • You may want to create an alias (or update your ~/.bashrc, etc.) for this final command to activate the python virtualenv during each login. It can be a pain to remember all these paths and commands.
   
   
   
   


6. Check your version of python now: which python3 should give: /path/to/new/virtualenv/bin/python3
   


7. Check pip is also available in the virtualenv via which pip... should give: /path/to/new/virtualenv/bin/pip
   

Then... pip, pip, pip!

Final tip to newbie Pythoneers: You don't think you need virtualenv when you start, but you will be happy to have it later. Helps with "what if" installation / upgrade scenarios for open source / shared packages.

Ref: https://virtualenv.pypa.io/en/latest/installation.html

What’s New In Python 3.4

pip should always be available

By default, the commands pipX and pipX.Y will be installed on all platforms (where X.Y stands for the version of the Python installation), along with the pip Python package and its dependencies.

https://docs.python.org/3/whatsnew/3.4.html#whatsnew-pep-453

so if you have python 3.4 installed, you can just: sudo pip3 install xxx

To install pip, securely download get-pip.py.

Then run the following:

python get-pip.py

Be cautious if you're using a Python install that's managed by your
operating system or another package manager. get-pip.py does not
coordinate with those tools, and may leave your system in an
inconsistent state.

Refer: PIP Installation

And for Windows 8.1/10 OS Users just open cmd (command prompt)

write this : C:Users%USERNAME%AppDataLocalProgramsPythonPython36-32Scripts

then

just write this : pip3 install {name of package}

Hint: the location of folder Python36-32 may get different for new python 3.x versions

If your Linux distro came with Python already installed, you should be able to install PIP using your system’s package manager. This is preferable since system-installed versions of Python do not play nicely with the get-pip.py script used on Windows and Mac.

Advanced Package Tool (Python 2.x)

sudo apt-get install python-pip

Advanced Package Tool (Python 3.x)

sudo apt-get install python3-pip

pacman Package Manager (Python 2.x)

sudo pacman -S python2-pip

pacman Package Manager (Python 3.x)

sudo pacman -S python-pip

Yum Package Manager (Python 2.x)

sudo yum upgrade python-setuptools

sudo yum install python-pip python-wheel

Yum Package Manager (Python 3.x)

sudo yum install python3 python3-wheel

Dandified Yum (Python 2.x)

sudo dnf upgrade python-setuptools

sudo dnf install python-pip python-wheel

Dandified Yum (Python 3.x)

sudo dnf install python3 python3-wheel

Zypper Package Manager (Python 2.x)

sudo zypper install python-pip python-setuptools python-wheel

Zypper Package Manager (Python 3.x)

sudo zypper install python3-pip python3-setuptools python3-wheel

Below video is how I did in cygwin:

https://asciinema.org/a/hSu4kmJ6wb7b2UiuvxiXqtgGK

There is weirdness in python's pip, pip2, pip3 craziness. In crazy situations like these, it is imperative that there is less talking or explanations, but instead demonstrate things out.