learn python the hard way ex 24 function not working, no error message

The function part of this program (everything after def) is not working. I have no error messages, and I believe I've typed everything the way Zed did. What's wrong?

print "Let's practice everything."
print 'You'd need to know 'bout escapes with \ that do n newlines and t tell'
# newline and a space are put in, tab and a space are put in

# this doesn't print the poem, only stores it
poem = """
tThe lovely world 
with logic so firmly planted
cannot discern n the needs of love
nor comprehend passion from intuition
and requires an explanation
ntt where there is none
"""

print "--------------"
print poem
print "--------------"

five = 10 - 2 + 3 -6
print "This should be five: %s" % five

def secret_formula(started):
    jelly_beans = started * 500
    jars = jelly_beans / 1000
    crates = jars / 100
    return jelly_beans, jars, crates
    # these are local variables, they are inside the function

    start_point = 10000
    # whatever happened to started now happens to start point
    # these are global variables, they are outside the function, could be called x, y, and z
    beans, jars, crates = secret_formula(start_point)

    print "With a starting point of: %d" % start_point
    print "We'd have %d beans, %d jars, and %d crates." (beans, jars, crates)

    # reassigns with new value based on old value
    start_point = start_point / 10

    print "We can also do that this way:"
    # brings down the info from line 29
    print "We'd have %d beans, %d jars, and %d crates." % secret_formula(start_point)