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if [ -z "$VIRTUAL_ENV" ]; then
echo "You need to activate your virtualenv first!";
echo 'Getting latest code with `git pull` ...'
echo 'Updating python packages with pip install ...'
pip install -r requirements.txt --no-deps --upgrade --upgrade-strategy=only-if-needed
if [ "$?" -gt 0 ]; then
echo 'Command `pip install ...` failed. Sometimes this is a random download error. If so, just try again.'
echo 'If you have taskd or the web server running, you should restart them now.'