# Your Name
# Date Last Modified
# What does this program do?

# Delete the pass statement and write a function that calculates and RETURNS
# the distance between two (x,y) points.  Check the assignment description
# for the distance formula. Worth 5 marks!

def distance(x1,y1,x2,y2):
    pass

print "The distance between (0,0) and (3,4) is", distance(0,0,3,4)
print "The distance between (-3,-4) and (3,4) is", distance(0,0,3,4)
print "The distance between (0,0) and (0,0) is", distance(0,0,0,0)