In ArcGIS Pro you need to create a new virtual Python environment in
order to install additional Python packages. How can you set up that virtual
environment on a machine that has no Internet access?
The first surprise is that creating a new virtual environment requires
Internet access at all — I had assumed the existing Python environment would
simply be copied locally. When creating a new virtual environment, ArcGIS Pro
attempts to download Python packages, presumably to install the most recent
available versions.
The simplest solution seems to be: create the new virtual environment on
a machine that has Internet access, install all additional packages you need
there, then copy that environment folder to the offline machine.
Prerequisite: ArcGIS Pro must be the same version on both machines — in
other words, the Python runtime must match. I don't know how exact that version
match must be.
Steps:
1) Create
a new Python environment in ArcGIS Pro.
2) Install
the additional packages you require.
3) The
newly created environment is placed in the user's folder:
C:\Users\<username>\AppData\Local\ESRI\conda\envs
Zip the subfolder that corresponds to the environment you want, copy the
zip file to the target (offline) machine, and extract it into the same folder
there.
See also: Solved: How to clone the ArcGIS Pro
3 Python environment? - Esri Community
