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Anaconda is an open-source Python distribution that makes is possible to easily install and manage many pre-packaged third party Python modules.
It has some big advantages over using the Python Esri provides with ArcGIS:
The general workflow to make this happen is to:
The main Anaconda distribution is pretty large (> 3 GB). MiniConda is a smaller version that just includes the Python standard library to start.
You can download and install either one, depending on whether you want to spend the time and disk space. Miniconda most efficient, as you can always download down anything in the conda distibution you want later.
Select install for a single user (Not "All Users")
Anaconda first run
Open the Anaconda prompt window (Search in Windows and start the shortcut "Anaconda Prompt") and enter "python"
(D:\Users\jwpowell\Miniconda2) C:\Users\jwpowell>python Python 2.7.13 |Continuum Analytics, Inc.| (default, May 11 2017, 14:07:41) [MSC v.1500 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. Anaconda is brought to you by Continuum Analytics. Please check out: http://continuum.io/thanks and https://anaconda.org >>>
At this point, you have a nice Anaconda Python setup (~ 225 MB) that's spiffy and new and totally useless with ArcMap.
The Department of Interior is now requiring SSL encryption. This means you cannot download Anaconda packages without an SSL certificate in place.
mkdir %USERPROFILE%\.certificates copy %USERPROFILE%\Downloads\/DOIRootCA2.cer %USERPROFILE%\.certificates conda config --set ssl_verify %USERPROFILE%\.certificates\DOIRootCA2.cer
If you plan to use the pip utility to download and install packages not included in the Conda distribution, set up a certificate for pip:
mkdir %APPDATA%\pip pushd %APPDATA%\pip echo [global] > pip.ini echo cert=%USERPROFILE%\.certificates\DOIRootCA2.cer >> pip.ini popd
The following workflow will demonstrate how set up a custom Python environment within Anaconda that has the same modules installed as ArcGIS Python, and then add a compatible version of Spyder and Jupyter.
The following example is for ArcGIS 10.4.1, assuming you have successfully installed MiniConda 2 32-bit (as above).
The critical modules for ArcGIS compatibility can be determined from your Desktop or Pro Python command line.
(Or you can just look at the list below under B.)
# pyversions.py - report ArcGIS Python modue versions # Example output: # C:\ArcGIS\Pro\bin\ArcGISPro.exe # Python 3.5.2 |Continuum Analytics, Inc.| (default, Jul 5 2016, 11:41:13) [MSC v.1900 64 bit (AMD64)] # matplotlib 1.5.3 # numpy 1.11.2 # scipy 0.18.1 import sys import os ff = "{} {}" try: print(sys.executable) print(ff.format("Python", sys.version)) import matplotlib print(ff.format("matplotlib", matplotlib.__version__)) import numpy print(ff.format("numpy", numpy.__version__)) import scipy print(ff.format("scipy", scipy.__version__)) except: pass
We'll also include a few other modules that we know are shipped in the ArcGIS Python stack.
Open an Anaconda command window and load the virtual environment.
C:\Users\jwpowell> conda info --envs # conda environments: # arc1041 D:\Users\jwpowell\Miniconda2\envs\arc1041 root * D:\Users\jwpowell\Miniconda2 D:\Users\jwpowell>activate arc1041 Activating environment "arc1041"... [arc1022] D:\Users\jwpowell> conda list # packages in environment at D:\Users\jwpowell\Miniconda2\envs\arc1041: # dateutil 2.4.1 py27_0 matplotlib 1.3.0 np17py27_0 numpy 1.7.1 py27_3 ...
You can add more packages using conda install, but make sure you specify version numbers for these that won't change the Python modules required to stay compatible with ArcGIS's Python stack.
Let's add the Jupyter notebook and the Spyder IDE which are both popular additions to your toolbox.
Specifying the list of module versions (ARCLIST) here ensures the environment will still work with ArcGIS 10.4.1.
set ARCLIST=python=2.7.10 numpy=1.9.2 matplotlib=1.4.3 scipy=0.16.0 pandas pyparsing xlrd xlwt conda install -n arc1041 %ARCLIST% jupyter spyder ... The following NEW packages will be INSTALLED: ...
You can search for more packages available in conda with conda search. There's a nice list on the Anaconda website that describes them all.
You're not limited to adding only packages to which conda has access to your new environment. Here's an example on how to install a commonly desired GIS-related package (shapely) into a conda virtual environment using the python pip utility:
http://deparkes.co.uk/2015/01/29/install-shapely-on-anaconda/
Conda does provide a method for pinning dependencies to an environment so you don't have to specify them each time (as: ARCLIST above). You need to list these packages in a filed called pinned in the conda-meta folder.
C:\Users\jwpowell> activate arc1041 (arc1041) C:\Users\jwpowell>(echo python ==2.7.10 & echo numpy ==1.9.2 & echo matplotlib ==1.4.3 & echo scipy ==0.16.0) > %CONDA_PREFIX%\conda-meta\pinned (arc1041) C:\Users\cprice>type %CONDA_PREFIX%\conda-meta\pinned python ==2.7.10 numpy ==1.9.2 matplotlib ==1.4.3 scipy ==0.16.0
Now that this has been set up, conda install scipy-0.18.1 will generate an error, and conda install six will update six to the highest version compatible with the pinned modules.
This can most easily be done (personal opinion) with a Python usercustomize.py startup script
########################################### # Edit here match your setup # These paths must match your Anaconda setup exactly. # Anaconda home folders conda_arcmap_home = r"D:\Users\jwpowell\Miniconda2" conda_arcmap64_home = r"D:\Users\jwpowell\Miniconda3x64" conda_arcpro_home = r"D:\Users\jwpowell\Miniconda3x64" # anaconda environments set up to match Desktop and Pro conda_arcmap_env = "arc1041" conda_arcmap64_env = "arc1041x64" conda_arcpro_env = "arcpro13" # change to false after testing done debug = True # do not edit below this line ###########################################
python -m site --user-site
C:\Users\username\AppData\Roaming\Python\Python27\site-packages (ArcGIS Desktop)
C:\Users\username\AppData\Roaming\Python\Python34\site-packages (ArcGIS Pro, Python35 for Pro 2.0)
ArcGIS
print ("\n".join(sys.path)) -- you should see the Anaconda site-packages near the end of the list
Anaconda
activate arc1041 (or whichever environment in the list)
import arcpy
print ("\n".join(sys.path)) -- you should see the ArcGIS site-packages near the end of the list
http://www.continuum.io/blog/conda
How to do a separate Python installation with ArcGIS? (GIS Stack Exchange)
Using ArcPy with Anaconda (PyMorton)