Question

What does the following code do?
def c(___, ____):
_ = lambda __:__ * _(__-1) if __ > 1 else 1
return _(___)/(_(____) * _(___ - ____))
def printf(format, *args):
s = format % (args)
sys.out.write(s)
for r in xrange(10):
for j in xrange(10):
printf("%5d", c(r, j))
print