To build a Python hello world example application with setuptools, we would use a meta-custom/recipes-python/python-helloworld/python-helloworld_1.0.bb recipe, as follows:

DESCRIPTION = "Simple Python setuptools hello world application" 
SECTION = "examples" 
LICENSE = "MIT" 
LIC_FILES_CHKSUM = 
   "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4 
   f302" 
 
SRC_URI = "file://setup.py   
      file://python-helloworld.py   
      file://helloworld/__init__.py   
      file://helloworld/main.py" 
 
S = "${WORKDIR}" 
 
inherit setuptools 
 
do_install_append () { 
    install -d ${D}${bindir} 
    install -m 0755 python-helloworld.py ${D}${bindir} 
} 

To create an example hello world package, we create the directory structure shown in the following screenshot:

Here is the code for the same directory structure:

$ mkdir -p meta-custom/recipes-python/python-helloworld/python- 
   helloworld-1.0/helloworld/
$ touch meta-custom/recipes-python/python-helloworld/python- 
   helloworld-1.0/helloworld/__init__.py

You will also need to create the following meta-custom/recipes-python/python-helloworld/python-helloworld-1.0/setup.py Python setup file:

import sys 
from setuptools import setup 
 
setup( 
    name = "helloworld", 
    version = "0.1", 
    packages=["helloworld"], 
    author="Alex Gonzalez", 
    author_email = "[email protected]", 
    description = "Hello World packaging example", 
    license = "MIT", 
    keywords= "example", 
    url = "", 
) 

You will also need the meta-custom/recipes-python/python-helloworld/python-helloworld-1.0/helloworld/main.py python file:

import sys 
 
def main(argv=None): 
    if argv is None: 
        argv = sys.argv 
    print "Hello world!" 
    return 0 

And finally a meta-custom/recipes-python/python-helloworld/python-helloworld-1.0/python-helloworld.py test script that makes use of the module:

#!/usr/bin/env python 
import sys 
import helloworld.main 
 
if __name__ == '__main__': 
       sys.exit(helloworld.main.main()) 

We can then add it to our image with the following addition to the conf/local.conf or image file:

IMAGE_INSTALL_append = " python-helloworld" 

Then, we can build it using the following:

$ cd /opt/yocto/fsl-community-bsp/
$ source setup-environment wandboard
$ bitbake core-image-minimal

Once programmed and booted, we can test the module by running the example script:

# /usr/bin/python-helloworld.py
Hello world!