How to get all the results with "google map" with writing a little python script?

How to get all the results with "google map" with writing a little python
script?

Open page "http://ditu.google.cn". Then I type in search box "school Newyork"
I was thinking of writing a little python scriptI to get all the search
results saved like this:
SchoolName
Address
Telephone
site
I'm trying to get these informations with BeautifulSoup. The problem is
that there are ten results in one page. I don't know how to change to
"Next Page" with Python. Is there any way to get all the results?