loop through a date range in shell

d=2015-12-31
while [ "$d" != 2017-01-01 ]; do
  echo $d
  d=$(date -I -d "$d + 1 day")
done

No matching distribution found for requirements.txt

If the  error "No matching distribution found for requirements.txt" occurs while installing pyhton packages in a virtualenv, try this:



pip install --upgrade -r requirements.txt