call site 6 for code.Source.__len__
code/testing/test_excinfo.py - line 25
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   def test_excinfo_getstatement():
       def g():
           raise ValueError
       def f():
           g()
       try:
           f()
       except ValueError:
           excinfo = py.code.ExceptionInfo()
       linenumbers = [f.func_code.co_firstlineno-1+3,
                      f.func_code.co_firstlineno-1+1,
                      g.func_code.co_firstlineno-1+1,]
       l = list(excinfo.traceback)
       foundlinenumbers = [x.lineno for x in l]
->     print l[0].frame.statement
       assert foundlinenumbers == linenumbers
code/frame.py - line 16
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   def statement(self):
->     return self.code.fullsource.getstatement(self.lineno)
code/source.py - line 95
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   def getstatement(self, lineno):
       """ return Source statement which contains the
               given linenumber (counted from 0).
           """
->     start, end = self.getstatementrange(lineno)
       return self[start:end]
code/source.py - line 123
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   def getstatementrange(self, lineno):
       """ return (start, end) tuple which spans the minimal 
               statement region which containing the given lineno.
           """
       # XXX there must be a better than these heuristic ways ...
       # XXX there may even be better heuristics :-)
       if not (0 <= lineno < len(self)):
           raise IndexError("lineno out of range")
   
       # 1. find the start of the statement
       from codeop import compile_command
       for start in range(lineno, -1, -1):
           trylines = self.lines[start:lineno+1]
           # quick hack to indent the source and get it as a string in one go
           trylines.insert(0, 'def xxx():')
           trysource = '\n '.join(trylines)
           #              ^ space here
           try:
               compile_command(trysource)
           except (SyntaxError, OverflowError, ValueError):
               pass
           else:
               break   # got a valid or incomplete statement
   
       # 2. find the end of the statement
->     for end in range(lineno+1, len(self)+1):
           trysource = self[start:end]
           if trysource.isparseable():
               break
   
       return start, end