Setup code for new raspberry pi including python, opencv

rasperry-pi-stretch-setup

sudo raspi-config
# interfacing options -> camera -> enable
# advanced options -> expand filesystem
# reboot

# install vim
sudo apt-get install vim

# clean up bloatware
sudo apt-get purge wolfram-engine
sudo apt-get purge libreoffice*
sudo apt-get clean
sudo apt-get autoremove

# make /playpen dir
cd /
sudo mkdir playpen
sudo chmod 777 playpen
cd ~

# install dependancies
sudo apt-get update
sudo apt-get -y upgrade
sudo apt-get -y install build-essential cmake pkg-config
sudo apt-get -y install libjpeg-dev libtiff5-dev libjasper-dev libpng12-dev
sudo apt-get -y install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev
sudo apt-get -y install libxvidcore-dev libx264-dev
sudo apt-get -y install libgtk2.0-dev
sudo apt-get -y install libatlas-base-dev gfortran
sudo apt-get -y install python2.7-dev python3-dev

# Download OpenCV source
cd ~
wget -O opencv.zip https://github.com/Itseez/opencv/archive/3.4.2.zip
unzip opencv.zip
wget -O opencv_contrib.zip https://github.com/Itseez/opencv_contrib/archive/3.4.2.zip
unzip opencv_contrib.zip

# install pip
wget https://bootstrap.pypa.io/get-pip.py
sudo python get-pip.py

# compile and install openCV
cd ~/opencv-3.4.2/
mkdir build
cd build
cmake -D CMAKE_BUILD_TYPE=RELEASE \
    -D CMAKE_INSTALL_PREFIX=/usr/local \
    -D INSTALL_PYTHON_EXAMPLES=ON \
    -D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib-3.4.2/modules \
    -D BUILD_EXAMPLES=ON ..
make -j4
sudo make install
sudo ldconfig

# rename python3 .so
cd /usr/local/lib/python3.5/dist-packages/
sudo mv cv2.cpython-35m-arm-linux-gnueabihf.so cv2.so

# install picamera
sudo apt-get install python3-picamera