Why does Python show the whole array?

[Gilles Ganault]

Hello

I'd like to go through a list of e-mail addresses, and extract those
that belong to well-known ISP's. For some reason I can't figure out,
Python shows the whole list instead of just e-mails that match:

======= script
test = "toto at gmail.com"
isp = ["gmail.com", "yahoo.com"]
for item in isp:
	if test.find(item):
		print item
======= output
gmail.com
yahoo.com
======= 

Any idea why I'm also getting "yahoo.com"?

Thank you.