Hello again,

in Knowlton's 2008 book "Python: Create, Modify, Reuse" the author makes frequent use of the term -1 in his code, but doesn't tell to what aim. For want of search terms Google is not helpful. Could someone please enlighten me by means of a one-liner as a reply?

Thank you!

David


Example Code:

for item in filelist:
        if item.find(extension)!= -1:
            snaplist.append(item)
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