Python Add packages to Anaconda environment. Let’s see some methods that can be used to install packages to Anaconda environment. There are many ways one can add pre-built packages to anaconda environment. So, let’s see how to direct the path in anaconda and install them. He helped 40 colleagues develop Python safely and consistently on MacOS systems following one core principle: 'The basic premise of all Python development is to never use the system Python. You do not want the Mac OS X 'default Python' to be 'python3.' You want to never care about default Python.'
Introduction¶
Apr 29, 2017 I am trying to add an external python library from a third party software into Spyder so I can work with it. I have already tried the following: - Adding library path containing.py files to ToolsPYTHONPATH manager - Synchronizing the path.
Although Python’s extensive standard library covers many programming needs,there often comes a time when you need to add some new functionality to yourPython installation in the form of third-party modules. This might be necessaryto support your own programming, or to support an application that you want touse and that happens to be written in Python.
In the past, there has been little support for adding third-party modules to anexisting Python installation. With the introduction of the Python DistributionUtilities (Distutils for short) in Python 2.0, this changed.
This document is aimed primarily at the people who need to install third-partyPython modules: end-users and system administrators who just need to get somePython application running, and existing Python programmers who want to add somenew goodies to their toolbox. You don’t need to know Python to read thisdocument; there will be some brief forays into using Python’s interactive modeto explore your installation, but that’s it. If you’re looking for informationon how to distribute your own Python modules so that others may use them, seethe Distributing Python Modules manual.
Best case: trivial installation¶
In the best case, someone will have prepared a special version of the moduledistribution you want to install that is targeted specifically at your platformand is installed just like any other software on your platform. For example,the module developer might make an executable installer available for Windowsusers, an RPM package for users of RPM-based Linux systems (Red Hat, SuSE,Mandrake, and many others), a Debian package for users of Debian-based Linuxsystems, and so forth.
In that case, you would download the installer appropriate to your platform anddo the obvious thing with it: run it if it’s an executable installer, rpm--install it if it’s an RPM, etc. You don’t need to run Python or a setupscript, you don’t need to compile anything—you might not even need to read anyinstructions (although it’s always a good idea to do so anyways).
Of course, things will not always be that easy. You might be interested in amodule distribution that doesn’t have an easy-to-use installer for yourplatform. In that case, you’ll have to start with the source distributionreleased by the module’s author/maintainer. Installing from a sourcedistribution is not too hard, as long as the modules are packaged in thestandard way. The bulk of this document is about building and installingmodules from standard source distributions.
The new standard: Distutils¶
If you download a module source distribution, you can tell pretty quickly if itwas packaged and distributed in the standard way, i.e. using the Distutils.First, the distribution’s name and version number will be featured prominentlyin the name of the downloaded archive, e.g. foo-1.0.tar.gz orwidget-0.9.7.zip. Next, the archive will unpack into a similarly-nameddirectory: foo-1.0 or widget-0.9.7. Additionally, thedistribution will contain a setup script setup.py, and a file namedREADME.txt or possibly just README, which should explain thatbuilding and installing the module distribution is a simple matter of running
If all these things are true, then you already know how to build and install themodules you’ve just downloaded: Run the command above. Unless you need toinstall things in a non-standard way or customize the build process, you don’treally need this manual. Or rather, the above command is everything you need toget out of this manual.
As a popular open source development project, Python has an activesupporting community of contributors and users that also make their softwareavailable for other Python developers to use under open source license terms.
This allows Python users to share and collaborate effectively, benefitingfrom the solutions others have already created to common (and sometimeseven rare!) problems, as well as potentially contributing their ownsolutions to the common pool.
This guide covers the installation part of the process. For a guide tocreating and sharing your own Python projects, refer to thedistribution guide.
Note
For corporate and other institutional users, be aware that manyorganisations have their own policies around using and contributing toopen source software. Please take such policies into account when makinguse of the distribution and installation tools provided with Python.
Key terms¶
![Python how to add numbers Python how to add numbers](https://code.visualstudio.com/assets/docs/python/environments/select-interpreters-command.png)
pip
is the preferred installer program. Starting with Python 3.4, itis included by default with the Python binary installers.- Icloud library on mac. A virtual environment is a semi-isolated Python environment that allowspackages to be installed for use by a particular application, rather thanbeing installed system wide.
venv
is the standard tool for creating virtual environments, and hasbeen part of Python since Python 3.3. Starting with Python 3.4, itdefaults to installingpip
into all created virtual environments.virtualenv
is a third party alternative (and predecessor) tovenv
. It allows virtual environments to be used on versions ofPython prior to 3.4, which either don’t providevenv
at all, oraren’t able to automatically installpip
into created environments.- The Python Packaging Index is a publicrepository of open source licensed packages made available for use byother Python users.
- the Python Packaging Authority is the group ofdevelopers and documentation authors responsible for the maintenance andevolution of the standard packaging tools and the associated metadata andfile format standards. They maintain a variety of tools, documentation,and issue trackers on both GitHub andBitbucket.
distutils
is the original build and distribution system first added tothe Python standard library in 1998. While direct use ofdistutils
isbeing phased out, it still laid the foundation for the current packagingand distribution infrastructure, and it not only remains part of thestandard library, but its name lives on in other ways (such as the nameof the mailing list used to coordinate Python packaging standardsdevelopment).
How To Add Library To Python Macbook
Changed in version 3.5: The use of
venv
is now recommended for creating virtual environments.See also
Basic usage¶
The standard packaging tools are all designed to be used from the commandline.
The following command will install the latest version of a module and itsdependencies from the Python Packaging Index:
Note
For POSIX users (including Mac OS X and Linux users), the examples inthis guide assume the use of a virtual environment.
For Windows users, the examples in this guide assume that the option toadjust the system PATH environment variable was selected when installingPython.
It’s also possible to specify an exact or minimum version directly on thecommand line. When using comparator operators such as
>
, <
or some otherspecial character which get interpreted by shell, the package name and theversion should be enclosed within double quotes:Normally, if a suitable module is already installed, attempting to installit again will have no effect. Upgrading existing modules must be requestedexplicitly:
More information and resources regarding
pip
and its capabilities can befound in the Python Packaging User Guide.Creation of virtual environments is done through the
venv
module.Installing packages into an active virtual environment uses the commands shownabove.See also
How do I …?¶
These are quick answers or links for some common tasks.
… install pip
in versions of Python prior to Python 3.4?¶
Python only started bundling
pip
with Python 3.4. For earlier versions,pip
needs to be “bootstrapped” as described in the Python PackagingUser Guide.See also
… install packages just for the current user?¶
Passing the
--user
option to python-mpipinstall
will install apackage just for the current user, rather than for all users of the system.… install scientific Python packages?¶
A number of scientific Python packages have complex binary dependencies, andaren’t currently easy to install using
pip
directly. At this point intime, it will often be easier for users to install these packages byother meansrather than attempting to install them with pip
.See also
![Library Library](https://python.org.br/images/instalacao-windows/05.png)
… work with multiple versions of Python installed in parallel?¶
On Linux, Mac OS X, and other POSIX systems, use the versioned Python commandsin combination with the
-m
switch to run the appropriate copy ofpip
:Appropriately versioned
pip
commands may also be available.On Windows, use the
py
Python launcher in combination with the -m
switch:Common installation issues¶
Installing into the system Python on Linux¶
On Linux systems, a Python installation will typically be included as partof the distribution. Installing into this Python installation requiresroot access to the system, and may interfere with the operation of thesystem package manager and other components of the system if a componentis unexpectedly upgraded using
pip
.On such systems, it is often better to use a virtual environment or aper-user installation when installing packages with
pip
.Pip not installed¶
How To Add Library To Python Mac Os
It is possible that
pip
does not get installed by default. One potential fix is:Add Python Library To Path
There are also additional resources for installing pip.
Installing binary extensions¶
Python has typically relied heavily on source based distribution, with endusers being expected to compile extension modules from source as part ofthe installation process.
With the introduction of support for the binary
wheel
format, and theability to publish wheels for at least Windows and Mac OS X through thePython Packaging Index, this problem is expected to diminish over time,as users are more regularly able to install pre-built extensions ratherthan needing to build them themselves.Some of the solutions for installing scientific softwarethat are not yet available as pre-built
wheel
files may also help withobtaining other binary extensions without needing to build them locally.See also