Executing multi-line statements in the one-line command-line

You could do

echo -e "import sys\nfor r in range(10): print 'rob'" | python

Or without pipes:

python -c "exec(\"import sys\nfor r in range(10): print 'rob'\")"

Or

(echo "import sys" ; echo "for r in range(10): print 'rob'") | python

Or SilentGhost’s answer or Crast’s answer.