Like many other developers, I work on a variety of UNIX-like operating systems including Linuxen, BSDs, and Mac OS X. While it’s generally pretty easy to build and install new software on Linux and BSD-based systems, it can be something of a pain in the arse to get some things to build on OS X, particularly when the multiple-architectures stuff comes into play. The most recent trouble I’ve had is in installing Python Imaging Library (henceforth PIL).

*[PIL]: Python Imaging Library

• In general, there's an executable file called pip inside the bin folder where you python is. (it might be called pip3 or something similar, depending on your python version and the distribution you are using). Put that on your system path, and then simply.
• Apr 05, 2021 MacOS comes with Python pre-installed. But it's Python Version 2.7, which is now deprecated (abandoned by the Python developer community). The entire Python community has now moved on to using Python 3.x (the current version as of writing this is 3.9). And Python 4.x will be out soon, but it will be completely backward compatible.
• Reinstall python and python3 via homebrew. At no time did I touch the python installation located within the /System folder. Oh, and to be clear. The answer to the original question is. Yes, you can trust the old references, as written! That guidance is still valid.

Dec 05, 2020 Finally python setup.py install worked fine. Edit: I should mention this was the solution for installing Pillow, not PIL, but Pillow is just a fork of PIL and it may still be applicable to others with this issue. Hope this helps! Plus being a Python library, you also have the ability to interact directly with various software interfaces, such as Maya, Max or MotionBuilder. Visit this link to see an example project that demonstrates a successful install (as of on High Sierra): https://wp.me/p4UxdV-8C.

Thankfully, it’s not too hard to figure out the problems and get it built, installed and passing the tests. This post provides a few pointers to getting PIL working on OS X 10.5.6 with the Python 2.6 package and a bunch of libraries installed using Macports.

The first thing to do is download the source code from the PIL download page. Unpack it as usual and then try to build it in the usual distutils fashion:

If your system is like mine, the build process will error out like this:

ld: in /opt/local/lib/libxml2.2.dylib, file is not of required architecture for architecture ppc

collect2: ld returned 1 exit status

lipo: can’t open input file: /var/folders/nk/nka0oBX-Gsy7r+w2hIFEfk+++TI/-Tmp-//ccMSWw7I.out (No such file or directory)

error: command ‘gcc’ failed with exit status 1

This is a relatively straight-forward error: it’s complaining that a library it needs doesn’t support an architecture that it’s trying to compile for, namely PPC. There are two ways to fix this:

1. Build this file manually without support for PPC (quick and easy); or
2. Install universal versions of all of the libraries that PIL depends on (likely to be slow and tedious but not particularly difficult).

Building manually

The first option is the quickest, so I’ll describe it first. Simply copy the gcc command that failed (it starts “gcc” and wraps over the next five lines) and paste it into your Terminal. Then delete the -arch ppc (if you’re on an x86 machine) or the -arch i386 (if you’re on a PPC) and run the edited command. When it completes, simply run python2.6 setup.py build again and it’ll take up where it left off and you’ll soon be ready to python2.6 setup.py install.

Installing universal libraries

The second option is a little bit more painful, because there are a number of libraries that you may need to reinstall as Universal. I’ll give instructions that I used and for [Macports][macports]. If you use something else, you’ll need to figure it out yourself.

Installing a universal version of a Macports package is pretty easy. All you need to do is add the +universal variant to it like so:

Updating an already installed package as a universal is similar:

I had to update the following packages (in order) before PIL would build:

1. libxml2; and

But you may also need to reinstall:

3. jpeg; and

With that done, setup.py should be able to build and install PIL.

The complete set of commands then is:

With luck, you should now be ready to go!

References

I used the following references in tracking this information down:

1. a comment on a blog post about Installing PIL on OS X 10.5.3.
2. a message by Christopher Barker to the Image-SIG list.
3. If you’re a fink person, you might find Kill PIL - The Python Imaging Library Headache or Building PIL on Mac OS X helpful.

PIP is among the most popular package managers for Python. This article will discuss how to install Python PIP on various operating systems.

Third-party libraries and packages are the main assets of the Python programming language. The standard python itself does not have many libraries and packages for the developers. As such, third-party libraries and packages give a boost to python programming.

Python is well known for its simplicity and ease, that’s why it also makes sure that you can easily install any third-party package and/or library for your project just by writing a simple one-line pip command. In python, you do not need to manage any of the installed packages, PIP will take care of everything.

What is PIP?

PIP stands for “Preferred Installer Program” and it is a command-line utility that helps you to manage your python third-party packages. By using the pip command, you can install, reinstall, update, and uninstall the PyPI package.

If you want to install popular third-party packages, such as NumPy, pandas, and TensorFlow for your project, you just need to open the command prompt or terminal on your system and type the pip install command to install any package or Library which are at PyPI.

What is PyPI?

PyPI stands for “Python Package Index” and it is the official central library for all the python packages, which means it consists of all the registered and licensed python packages. PIP itself uses PyPI as the source to install all the python packages. By now, PyPI has more than 130,000 packages on its repository.

How Do I Install Python PIP?

If you are using the Python 2.7 (or greater) or Python 3.4 (or greater) versions of python then you do not need to install PIP, because Python comes with a compatible version of PIP by default.

How to check the version of python installed on my system?

Open your cmd (Windows) or terminal (macOS, Linux) and write this command:

How to check the version of pip installed on my system?

Open the command prompt (Windows) or terminal (macOS, Linux) and enter the following command:

Please note that you need to install pip separately only if you are using an old version of the Python programming language. If you are doing so, we highly suggest you to download the latest version of Python.

If you are using a virtual environment and want to use the old version of Python and pip then you have to install PIP separately.

How to Install pip on Windows?

It’s very easy to install pip on Windows. You just need to install a python file and run it using the command prompt. Ensure you must have the old version of python to run this file. Follow these steps to install pip on Windows:

1. Download the get-pip.py installer script and save it as a python file by the name get-pip.py. If you are using the old Python 3.2 version, download this python file as get-pip.py and save it on your system.
2. Now open your command prompt ((win+r) + cmd) and navigate to the get-pip.py downloaded file.
3. Use command python get-pip.py and run the file.
4. Now you have installed pip on your windows successfully.
5. Use pip –version command to check the version of pip.

How to Install pip on macOS?

macOS is the only operating system that comes with the preinstalled, latest version of python and pip. But if you have the old version of python and want to install pip on your macOS, you just need to write a simple terminal command to install pip for the corresponding version of installed python. This command is:

How to install pip on Linux?

Like other operating systems, if you have the latest version of Python you would not need to install pip separately. But if you are using some old version of python then you have to install the Python package manager.

Compared to Windows and macOS, the process of installing pip on Linux is different. This is because the OS has different commands for different versions of the Python ecosystem.

How to Install PIP on Raspberry Pi?

Terminal commands:

For old versions of Python 2.x:

For old versions Python 3.x:

Top Pip Commands

Install Python Library Mac Download

These are some of the most widely-used Python PIP commands:

Conclusion

Long story short, you do not need to install pip if you have the latest version of Python. If pip is not functional on your system just reinstall Python, if possible, download the latest version. It might solve the PIP problem.

Moreover, it’s highly suggested that rather than installing pip separately, install the latest version of python that already comes with a pre-installed PIP.

If you like this article and have any suggestions feel free to comment down below.

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