Confused About Python's With Statement

I saw some code in the Whoosh documentation: with ix.searcher() as searcher: query = QueryParser('content', ix.schema).parse(u'ship') results = searcher.search(query) I re

Solution 1:

Example straight from PEP-0343:

with EXPR as VAR:
   BLOCK

#translates to:

mgr = (EXPR)
exit = type(mgr).__exit__  # Not calling it yet
value = type(mgr).__enter__(mgr)
exc = Truetry:
    try:
        VAR = value  # Only if "as VAR" is present
        BLOCK
    except:
        # The exceptional case is handled here
        exc = Falseifnot exit(mgr, *sys.exc_info()):
            raise# The exception is swallowed if exit() returns truefinally:
    # The normal and non-local-goto cases are handled hereif exc:
        exit(mgr, None, None, None)

Solution 2:

Read http://www.python.org/dev/peps/pep-0343/ it explains what the with statement is and how it looks in try .. finally form.