How to setup Raspbian Stretch Lite on Raspberry Pi 3 to run Python 3 applications
Raspbian Stretch Lite operating system is the Raspberry Pi Foundation's official supported operating system for running headless software. It is a good operating system for different Raspberry Pi 3 use cases. Some examples include:
If you are planning to use Raspberry Pi 3 GPIO to interface with the real world, it is recommended that you setup Raspbian Stretch Lite to run Python 3 applications.
This post provides the steps to setup Raspbian Stretch Lite on Raspberry Pi 3 for running Python 3 applications.
Recommended hardware list
- CanaKit Raspberry Pi 3 with 2.5A Micro USB Power Supply or CanaKit Raspberry Pi 3 B+ (B Plus) with 2.5A Power Supply (UL Listed)
- Raspberry Pi 2/3 official case Black/Grey or Raspberry Pi 2/3 official case Red/White
- Sandisk Ultra 32GB Micro SDHC UHS-I Card with Adapter
- AmazonBasics RJ45 Cat-6 Ethernet Patch Cable - 3 Feet (0.9 Meters)
Setting up Raspbian Stretch Lite with SSH server enabled on your microSD card
Once you had gathered all the necessary hardware, proceed to setup Raspbian Stretch Lite with SSH server enabled on your microSD card. Doing so will allow you to SSH into your Raspbian Stretch Lite to perform further configurations in this post.
Assembling the hardware for the Raspberry Pi 3
Once the ssh file is created in the boot partition of the microSD card, remove the microSD card from your SD card reader and insert it to the microSD card slot on the Raspberry Pi 3 board. After that, proceed to assemble the Raspberry Pi 3 board to the Official Raspberry Pi case.
Starting the Raspbian Stretch Lite operating system
With the assembly of your Raspberry Pi 3 board and Official Raspberry Pi case, connect one end of the RJ45 cable to the RJ45 port on the Raspberry Pi 3 board and the other end of the cable to one of the switch port of your home router. After that, connect the micro USB power supply to the Raspberry Pi 3 board and a wall socket. Turn on the power socket to supply power to the Raspberry Pi 3 board.
Changing default password, Locale and Timezone of your Raspbian Stretch Lite
There are a few configurations that you should perform on the first run of your Raspbian Stretch Lite. Proceed on to change the default password, Locale and Timezone of your Raspbian Stretch Lite.
Checking if Python 3 is included in Raspbian Stretch Lite by default
Raspbian Stretch Lite includes Python 3 by default. We can verify that by running the following command:
dpkg --get-selections | grep python3
which returns the following output:
libpython3-stdlib:armhf install libpython3.5:armhf install libpython3.5-minimal:armhf install libpython3.5-stdlib:armhf install python3 install python3-apt install python3-minimal install python3.5 install python3.5-minimal install
Installing Python 3 package manager (pip3) on Raspbian Stretch Lite
This version of Raspbian Stretch Lite did not install the Python 3 Package Manager by default. The Python 3 package manager will be useful for managing the dependencies for your Python 3 applications. As such, proceed to install the Python 3 Package Manager on Raspberry Stretch Lite.
To install the Python 3 Package Manager, run the following command:
sudo apt-get install python3-pip -y
Once the Python 3 package manager is successfully installed, you can run the following command to see the Python 3 Packages that are available in the system:
Running the command can show output similar to the following:
cryptography (1.7.1) idna (2.2) keyring (10.1) keyrings.alt (1.3) pip (9.0.1) pyasn1 (0.1.9) pycrypto (2.6.1) pygobject (3.22.0) python-apt (1.1.0b5) pyxdg (0.25) SecretStorage (2.3.1) setuptools (33.1.1) six (1.10.0) wheel (0.29.0)
Installing Virtualenv on Raspbian Stretch Lite
Virtualenv is a tool that allows us to create isolated environments in the same machine. This is useful if you have to run multiple applications with conflicting python dependencies on your Raspberry Pi 3.
To install Virtualenv, I run the following command:
sudo apt-get install virtualenv -y
Buying your Raspberry Pi 3 components from Amazon
If you do not have the Raspberry Pi 3 components mentioned in this post yet, you may want to purchase them from Amazon. Simply click on the button below to add the Raspberry Pi 3 components to your cart. You may remove anything that you already have or replace some of the components with other components.