I'm developing a QGIS plugin and I would like to use arrow or requests packages as I'm used to manipulate dates and REST APIs.

QGIS does not come with these packages (at less arrow), so when I try to access my plugin in QGIS I've got :

"ImportError: No module named arrow"

How can I specify my requirements?

  • 3
    package the egg of the modules with the plugin... or intercept the error and notify the user to install the missing packages Commented Dec 23, 2015 at 16:52
  • R has packages, Python has modules and if you use a Windows version, they are difficult to install (particularly with the standalone QGIS version, see How to install 3rd party python libraries for QGIS on Windows?)
    – gene
    Commented Dec 23, 2015 at 17:54
  • 2
    In Boundless plugis you can find a way to package module in the same plugin. e.g. read this code github.com/boundlessgeo/qgis-geoserver-plugin Commented Dec 24, 2015 at 8:57
  • @gene python has packages and modules - stackoverflow.com/questions/7948494/…
    – user2856
    Commented Dec 24, 2015 at 11:09
  • 1
    @LuigiPirelli if you find the time, it would be great if you could summarize the necessary steps to package a module in a plugin in an answer to this question. Thanks a lot!
    – underdark
    Commented Dec 25, 2015 at 22:00

1 Answer 1


Thanks for the resources. I tried to use paver but it seems to be a bit painful to implement, for a non-expert developer, no?

Furthermore, by default, pip is not installed even with the OSGeo4W installer. Could you paver script works without it?

To install it, I followed these instructions and I produced a batch file (see below) but doesn't solve the admin rights problems:

@echo off
Title "PyPi in QGIS"
Echo "Adding 3rd party modules in QGIS"

REM securely download get-pip install script
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py

REM install pip
python get-pip.py

REM install 3rd party modules
pip install --user arrow
pip install --user requests
pip install --user requests[security]

@echo on
  • 2
    To install into user python directory (no admin rights needed) you can add --user switch into your command: pip install --user arrow and etc. Commented Jun 6, 2017 at 7:31

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