Script to pull the existing packages from a setup.py, pip install latest versions of those packages, pip freeze those versions and repopulate the setup.py

update_packages.sh

#!/bin/bash

# Work in Progress
# The pip freeze will bring in a lot more packages explicitly than expected.
# Still need to populate/paste into setup.py correctly.
SETUP_PY_PATH="./setup.py"

# Extract install_requires values without versioning
INSTALL_REQUIRES=$(grep -oP '"[^"]+"' $SETUP_PY_PATH \
    | grep -oP '"[^"]+"' \
    | grep '==' \
    | tr -d '"')

REQUIREMENTS_TMP='requirements_tmp.txt'
# Create or overwrite requirements_tmp.txt
echo "$INSTALL_REQUIRES" > $REQUIREMENTS_TMP

# Display a message
echo "Requirements have been extracted and written to requirements.txt:"
cat $REQUIREMENTS_TMP

pip install -r $REQUIREMENTS_TMP
pip freeze > $REQUIREMENTS_TMP

# Pause for debugging
#read -n 1 -s -r -p "Press any key to continue..."

echo "Freezing exact versions"
cat $REQUIREMENTS_TMP

echo "Updating setup.py with entries from requirements.txt..."
sed -i "s/\(install_requires\s*=\s*\)[^,]*\(,\)/\1['$(paste -s -d, requirements.txt)']\2/" "$SETUP_PY_PATH"

echo "setup.py has been updated:"
cat "$SETUP_PY_PATH"

rm $REQUIREMENTS_TMP