test_xml_etree.py 文件源码

def __init__(self, quiet=False):
        if sys.flags.optimize >= 2:
            # under -OO, doctests cannot be run and therefore not all warnings
            # will be emitted
            quiet = True
        deprecations = (
            # Search behaviour is broken if search path starts with "/".
            ("This search is broken in 1.3 and earlier, and will be fixed "
             "in a future version.  If you rely on the current behaviour, "
             "change it to '.+'", FutureWarning),
            # Element.getchildren() and Element.getiterator() are deprecated.
            ("This method will be removed in future versions.  "
             "Use .+ instead.", DeprecationWarning),
            ("This method will be removed in future versions.  "
             "Use .+ instead.", PendingDeprecationWarning),
            # XMLParser.doctype() is deprecated.
            ("This method of XMLParser is deprecated.  Define doctype.. "
             "method on the TreeBuilder target.", DeprecationWarning))
        self.checkwarnings = test_support.check_warnings(*deprecations,
                                                         quiet=quiet)