Question

I wonder why the for loop is not extending it’s iteration:

    for link in frontLinks:  
        #try:           
        getCurlink = self.getHref(link) # get current site links
        #print getCurlink
        #print frontLinks 
        if getCurlink:
            frontLinks = frontLinks + getCurlink

This line:

frontLinks = frontLinks + getCurlink

doesn’t apply to frontLinks of the “for” loop. Any ideas??

Answer 1

The for loop evaluates its expression once, to get an iterator. Later, you re-bind the name frontLinks to be a new list. The new list won’t have anything to do with the for loop.

Although it is tricky to modify a list while iterating over it, it’s OK to add to the end of the list, it will work. Change your last line to this:

frontLinks.extend(getCurlink)