Question

I’m new to mechanize in python and it would be nice if someone could explain why this happens?

import mechanize
br = mechanize.Browser()
a = br.open('http://www.google.co.in')
links = br.links()
for link in links:
    print link.url

However when I do this again, nothing gets printed out

 for link in links:
    print link.url

Can someone explain this?

Answer 1

My best guess would be that maybe br.links() returns a generator. And that means that it doesn’t return one big iterable, but is dynamic and waits for the next to be called on it before returning the next value in the sequence, so unless you store the variable yourself into a list, then it is only usable once.