Logging, scanning, and singleton objects for Python: logscan.py and singleton.py

# - - -   S c a n . _ _ e f f P o s

    def __effPos ( self, p ):
        '''Return the equivalent position for position p.

          [ p is an int ->
              return effective-pos(p) ]
        '''

For the definition of the effective-pos verification function, see Section 20, “The Scan class”.

        if p < 0:
            return len(self.line) + 1 + p
        else:
            return p