a two input primed sentinel loop

sentinel01.py

# A Primed two input loop example

### INITIALIZE
total_cat_age = 0
total_cat_weight = 0
total_cats = 0

print "Enter one or more cats age and weight and . to finish"

### LOOP PRIMER
cat_age_input = raw_input("How old is the cat?: ")


### LOOP
while(cat_age_input != "."):
  cat_weight_input = raw_input("How much does the cat weigh?: ")

  total_cats       += 1 # same as total_cats = total_cats + value
  total_cat_age    += int(cat_age_input)
  total_cat_weight += int(cat_weight_input)

  cat_age_input = raw_input("How old is the cat?: ")


### SUMMARY
print "You have {} cats with {} years of combined fluffiness that weigh {} pounds all together".format(total_cats, total_cat_age, total_cat_weight)