python-package-offline-install-notes.md

Offline Python Package Install Notes

Two common cases which make the install of Python packages harder due to networking issues are: a) Install behind a Proxy b) Install without access to the internet

(a) Install behind a Proxy

In the case where the target machine connects to the internet over a network proxy, export the following environment vars, as appropriate - http_proxy and https_proxy. Eg:

$ export https_proxy=http://proxy.mydomain.com:<port>
$ export http_proxy=http://proxy.mydomain.com:<port>
$ pip install <package>

(b) Install without access to the internet

In the case where the target machine does not have connectivity to the internet, you have to download the package and dependencies using a machine which does have connectivity to the internet. After which the install can follow. Sample instructions -

Step 1. Download Packages for Offline Install

Execute the instructions below download the packages on a machine which is able to connect to the internet.

# if a single package is being installed
$ pip install <package> --download /tmp/offline_packages

# or, if a list of dependencies are to be installed
$ pip install --download /tmp/offline_packages -r requirements.txt

Step 2. Transfer downloaded packages

Transfer downloaded packages to the target machine where the install is to be performed. Use scp/sftp/etc.

Step 3. Install packages

Assuming the directory /tmp/transferred_packages contains the contents of /tmp/offline_packages from the earlier machine, execute the following steps on the the target machine.

# if a single package is being installed
$ pip install --no-index --find-links="/tmp/tranferred_packages" <package>

# if a list of dependencies are to be installed
$ pip install --no-index --find-links="/tmp/tranferred_packages" -r requirements.txt

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References