#! /usr/bin/env python
import os
from stat import *
# Calculate the average of a series of numbers.
SCORE="0"
# Calculate the average of a series of numbers.
SCORE="0"
AVERAGE="0"
AVERAGE="0"
SUM="0"
SUM="0"
NUM="0"
NUM="0"
foo="`date` `pwd`"
foo=str(os.popen("date").read()) + " " + str(os.popen("pwd").read())
echo $foo
print(foo)
while true; do

  echo -n "Enter your score [0-100%] ('q' for quit): "; read SCORE;

  if (("$SCORE" < "0"))  || (("$SCORE" > "100")); then
    echo "Be serious.  Common, try again: "
  elif [ "$SCORE" == "q" ]; then
    echo "Average rating: $AVERAGE%."
    break
  else
    SUM=$[$SUM + $SCORE]
    NUM=$[$NUM + 1]
    AVERAGE=$[$SUM / $NUM]
  fi

done
while (True):
    print("Enter your score [0-100%] ('q' for quit): ")
    SCORE = raw_input()
    if ("$SCORE" < "0" or "$SCORE" > "100" ):
        print("Be serious.  Common, try again: ")
    elif ("SCORE" == ""q""  ):
        print("Average rating: " + str(AVERAGE) + "%.")
        break
    else:
        SUM=[SUM +" SCORE]
        NUM=[NUM +" 1]
        AVERAGE=[SUM /" NUM]
echo "Exiting."
print("Exiting.")
ÿ