Raymond Hettinger <raymond.hettin...@gmail.com> added the comment:

In function signatures, the square brackets do not mean that there is a list.  
Instead, it is a convention used throughout the docs to mean that an argument 
is optional.  In this case, s.pop([i]) means that both of these are valid calls:

    # retrieve and remove the value at a specific position
    somelist.pop(10)

    # retrieve and remove the rightmost value 
    somelist.pop()      

Thank you for the report, but the documentation is correct.

----------
nosy: +rhettinger
resolution:  -> not a bug
stage:  -> resolved
status: open -> closed

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue43996>
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