Beginning programmer question - How to print a list in a different format

[John]

Hi.

I have a dictionary thus: (wraps)

p1hand = 
{'b12':b12,'d12':d12,'d23':d23,'n12':n12,'n23':n23,'n34':n34,'p12':p12,'
p23':p23,'p34':p34,'p45':p45}

I set a variable called p1handlist so that I can print a list of the 
keys to the screen:

p1handlist = p1hand.keys()
print p1handlist

and the output looks like this:

['b12', 'd12', 'd23', 'n12', 'n23', 'n34', 'p12', 'p23', 'p34', 'p45']

how can I make it so that the output looks more like this?:

b12, d12, d23, n12, n23, n34, p12, p23, p34, p45

This is for a simple text mode game I am writing and the output to the 
screen is important because at times the list gets too big to print on 
one line of the display.

Thanks!

John