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heroku-buildpack-python/bin/detect
T

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#!/usr/bin/env bash
# bin/detect <build-dir>
BUILD_DIR=$1
function abort() {
echo $1 1>&2
exit 1
}
[ -f $BUILD_DIR/requirements.txt ] || abort "fatal: Not a Python app (no requirements.txt)"
# 'Python/Django' if there is a [mysite]/settings.py file present; otherwise 'Python'
ls $BUILD_DIR/**/settings.py &> /dev/null && echo Python/Django || echo Python